Dr.P.SHYAMALA

Scopus Publications

Design, synthesis and biological evaluation of novel chalcone-derived thioxopyridine and pyrazolopyridine compounds as antimicrobial agents
Gaber Algaber, P. Shyamala, Zaccaria Dammag, Mohammed Al-haddad
Scientific Reports, 2026
The present work deals with the synthesis of some new chalcone, 2- thioxopyridine,2-methylthiopyridine, 2-hydrazinopyridine and 3-amino-1H-pyrazolo[3,4-b]pyridine derivatives containing biologically active substituents. The starting material of the present study was synthesis of the 2-cyanoethanethioamide from malononitrile using a modified Brunskill procedure, followed by the synthesis of the 1,3-diarylprop-2-en-1-one (chalcone) from a ketone and an aldehyde. 2-Thioxopyridines were obtained through Michael addition of α,β-unsaturated ketones with 2-cyanothioacetamide to afford the non-isolable intermediates 8 & 9 followed by cyclization and subsequent dehydration and dehydrogenation of the cyclized product to give compound 4-(furan-2-yl)-6-(4- methoxyphenyl)-2-thioxo-1,2-dihydropyridine-3-carbonitrile which was reacted with methyl iodide in methanolic sodium methoxide to afford the corresponding 4-(furan-2-yl)-6-(4-methoxyphenyl)-2-(methylthio) pyridine-3-carbonitrile, which was reacted with hydrazine hydrate to give the corresponding 2-hydrazinopyridines, which cyclized to afford the corresponding 3-aminopyrazolo[3,4-b]pyridine derivatives and were characterized by FT-IR, 1H-NMR, 13C-NMR and MS spectral studies. All the newly synthesized compounds were evaluated for their in vitro antibacterial activity against S. aureus as example of Gram-positive bacteria and E. coli as example of Gram-negative bacteria. They were also evaluated for their in vitro antifungal potential effect against C. albicans. The zone of inhibition was measured using the well diffusion assay, and the results indicated that compounds 3, 5, 10 and 13 showed potential antibacterial and antifungal effects.
Fabrication of bimetallic (Mg-V)-doped TiO2 nanostructure via microwave-assisted sol-gel approach for enhanced electrocatalytic detection and photocatalytic degradation of hazardous tetracycline
Samuel Chufamo Jikamo, P. Shyamala, Singupilla Sai Supriya, Sandhya Rani Nayak, NageswaraRao Kadiyala, Winnie Teja Dokka
Next Materials, 2026
Nanocatalysts have emerged as powerful materials for environmental remediation, enabling both detection and removal of pollutants. In this study, magnesium and vanadium co-doped TiO 2 nanocatalysts were synthesized using a microwave assisted sol gel method and for the first time, employed as dual functional material for both the electrocatalytic detection and photocatalytic degradation of tetracycline in aqueous solution. The fabricated Mg-V co-doped TiO2 nanoparticles were characterized using various analytical techniques. The effects of dopant weight concentration and microwave irradiation power were systematically optimized, with the catalyst prepared at 0.25 wt% Mg and 1 wt% V under 540 W irradiation (MVT5M3) showed a lower band gap, smaller particle size, suppressed electron hole recombination than others. For electrochemical sensing, MVT5M3 was coated onto glassy carbon electrode (GCE) and characterized by cyclic voltammetry (CV) techniques. The catalyst enhanced sensitivity to 4.31 µA μM⁻¹ cm⁻² and a lower limit of detection (LOD) 0.3 µM for tetracycline detection using linear sweep voltammetry (LSV) techniques. In addition, the MVT5M3 catalyst achieved 93.53% photocatalytic degradation efficiency of tetracycline within 60 min under visible light irradiation. These results underline the potential of the Mg-V co-doped TiO 2 nanocatalyst as a highly efficient and bifunctional material for pharmaceutical pollutant monitoring and removal.
Correction: Highly sensitive electrochemical detection of hazardous 2,4-dinitrophenylhydrazine using MgCo-TiO2/g-C3N4 heterostructure nanocomposites
Samuel Chufamo Jikamo, T. Siva Rao, P. Shyamala, Singupilla Sai Supriya, Sandhya Rani Nayak, Nageswararao Kadiyala, Winni Teja Dokka, M. Ravi Chandra, M. V. Kishore
Rsc Advances, 2026
Correction for ‘Highly sensitive electrochemical detection of hazardous 2,4-dinitrophenylhydrazine using MgCo-TiO 2 /g-C 3 N 4 heterostructure nanocomposites’ by Samuel Chufamo Jikamo et al. , RSC Adv. , 2025, 15 , 45855–45873, https://doi.org/10.1039/D5RA07106B
Forced Degradation Studies of Dobutamine and Isolation, Identification, and Characterization of Potential Degradation Impurity by Preparative HPLC, LC–MS/MS. Development and Validation of Stability Indicative UPLC Method
Babu Reddy Goguladinne, Pulipaka Shyamala, K. M. V. Narayana Rao
Biomedical Chromatography, 2025
Dobutamine (DB) is a β1‐adrenergic agonist with weak β2 activity and α1 selective activity, which is used clinically in cases of cardiogenic shock. Most of the available literature methods for DB that are LCMS incompatible have limitations for the identification of impurities. The current study describes forced degradation studies of DB and the identification of impurities by mass analysis, assigning structure to the major degradant, and the development and validation of an LCMS‐compatible UPLC method. Impurity A (dopamine) highly polar impurity listed in the dopamine US Pharmacopeial Monograph, was retained in the developed method without an ion pair reagent. The method has been developed using Waters Acquity UPLC system equipped with Acquity UPLC HSS PFP column (2.1 mm × 100 mm, 1.8 μ), 0.05% TFA in water:ACN (95:5 %v/v) as Mobile Phase A, and 0.05% TFA in water:ACN (5:95 %v/v) as Mobile Phase B using a gradient program. DB degradation behavior was studied by subjecting it to acidic, basic, neutral, and oxidative conditions as per ICH guideline Q1A (R2). One of the major degradants was isolated by preparative HPLC and identified characterization by LCMS/MS and HRMS. The newly developed UPLC method was found to be specific with respect to degradation products, and the method has been validated according to the ICH guidelines.
Structural Modification and Performance Enhancement of Zirconium Oxide with Copper Doping for Photo Catalytic and Antibacterial Applications
J. Suresh Kumar, P. Shyamala, S. Gouthamsri, M. Ramanaiah
Research Journal of Chemistry and Environment, 2025
Zirconium oxide (ZrO2) and copper-doped zirconium oxide (Cu-ZrO2) nanoparticles (NPs) were synthesized via a sol-gel combustion method to study the influence of doping on their photocatalytic and antimicrobial properties. X-ray diffraction (XRD) analysis confirmed a mixed tetragonal and monoclinic phase structure with decreasing crystallite size at higher dopant concentrations. The NPs were characterized using FTIR, XRD, SEM-EDX, XPS and UV-Vis spectroscopy. SEM revealed spherical morphology with minimal agglomeration. Under visible light, Cu-ZrO2 NPs exhibited enhanced photo- catalytic activity, degrading 96% of malachite green (MG) dye within 120 min. Antimicrobial assays demonstrated superior activity of Cu-ZrO2 against S.aureus, with an inhibition zone of 8 mm compared to E.coli.
Highly sensitive electrochemical detection of hazardous 2,4-dinitrophenylhydrazine using MgCo-TiO2/g-C3N4heterostructure nanocomposites
Samuel Chufamo Jikamo, T. Siva Rao, P. Shyamala, Singupilla Sai Supriya, Sandhya Rani Nayak, Nageswararao Kadiyala, Winni Teja Dokka, M. Ravichandra, M. V. Kishore
Rsc Advances, 2025
In this study, MgCo-TiO 2 /g-C 3 N 4 heterostructure nanocomposites were successfully synthesized for the electrochemical detection of 2,4-dinitrophenylhydrazine.
Synthesis and evaluation of edaravone-1,3,4-oxadiazole derivatives as potential anti-cancer inhibitors
Malapati Venkateswara Reddy, P. Shyamala, Arvind Kumar Sharma, Preeti Nanda Sahu, Krishnaveni Subramaniyam, Sitaram Harihar, Anik Sen
New Journal of Chemistry, 2025
Ederavone derivatives exhibits anticancer activities and inhibits EGFR kinase – an in silico and in vitro approach.
Efficient Removal of Methylene Blue and Inactivation of Pathogens by Cobalt Doped ZrO2 Nanoparticles
J. Suresh Kumar, P. Shyamala, S. Gouthamsri, M. Ramanaiah
Ecs Journal of Solid State Science and Technology, 2025
In this investigation, we synthesized a pure ZrO2 and Co-doped ZrO2 nanoparticles, through glycine assisted sol-gel method. The phase purity of prepared nanoparticles was conformed through X-ray diffraction (XRD) and Fourier Transform Infrared (FTIR) techniques. The morphology and average crystallite size of pure and Co-doped ZrO2 nanoparticles was investigated using scanning electron microscopy (SEM), and observed average crystallite size were 24 (Co-doped ZrO2) and 20 nm (pure ZrO2). The Brunauer–Emmett–Teller (BET) technique was employed to study the surface area of the prepared nanoparticles, and observed surface area were 103 m2 g−1 (pure ZrO2) and 140 m2 g−1 (Co-doped ZrO2). High photocatalytic efficiency was observed in Co-doped ZrO2 nanoparticle due to improved surface area. The degradation of MB dye under visible light irradiation at various pH levels was also tested using the synthesised nanoparticles’ photo-catalytic capability. The prepared catalyst was the most effective for inactivation of S. aureus and may be utilized at large scale in treat wastewater effectively. It is noteworthy that the photocatalyst exhibits stability and reusability across several cycles. The work offers important new information about Co-doped ZrO2 nanoparticle potential as an effective antimicrobial agents and an effective photocatalyst for environmental clean-up.
Stereoselective reduction of enantiopure α-l-amino-β-keto esters using oxazaborolidine catalysts for the synthesis of statine analogues
Malapati Venkateswara Reddy, Shyamala Pulipaka, Arvind Kumar Sharma
Organic Communications, 2025
An efficient diastereoselective synthesis of Boc-protected 4-amino 3-hydroxy esters starting from natural amino acids is described.The key synthetic strategy involves diastereoselective reduction of -L-amino--keto esters in the presence of enantiopure R and S-2-Methyl-CBS-oxazaborolidine catalysts using borane as hydride source.The product diastereoselectivity depends upon the use of (R) or (S) enantiomer of 2-Methyl-CBS-oxazaborolidine.A reasonable mechanism is included which explains the diastereoselectivity of the reactions with the use of different enantiomers of 2-Methyl-CBS-oxazaborolidine.Furthermore, the resulting diastereomeric mixture of the reduced products can be separated by column chromatography to gain access to the single pure diastereomers.
Determination of ternary stability constants for metal complexes of succinic acid dihydrazide and glycine using pH-Metric analysis in aqueous medium
B. Uma Rani, D. Nirmala Devi, P. Shyamala, D. Aditya Deepthi, A. Satyanarayana
Journal of the Indian Chemical Society, 2025
Amide Functionalized Novel Pyrrolo-pyrimidine Derivative as Anticancer Agents: Synthesis, Characterization and Molecular Docking Studies
Praveen Kumar Bandaru, Satya Kameswara Rao Nidasanametla, Pulipaka Shyamala
Anti Cancer Agents in Medicinal Chemistry, 2025
Cu/H–ZSM-5: A highly active and selective catalyst for the production of γ-valerolactone from biomass-derived levulinic acid
Vijayanand Perupogu, Suresh Babu Gadamani, Rajendiran Rajesh, Putra Kumar Balla, Shyamala Pulipaka, Srinivasa Rao Pinapati, Lingaiah Nakka
Journal of Chemical Sciences, 2024
Surfactant Micelles as Catalysts: Kinetic Modelling and Key Models
Karrı Lavanya, Srikanth Vemuri, Shyamala P, Nagalakshmi K V, Ravi Vital Kandisa
Journal of the Turkish Chemical Society Section A Chemistry, 2024
Stress degradation study of Etoricoxib, isolation, and characterization of major degradation impurity by preparative high-performance liquid chromatography, liquid chromatography-mass spectrometry, and nuclear magnetic resonance: Validation of ultra-performance liquid chromatography method
Babu Reddy Goguladinne, Pulipaka Shyamala, K. M. V. Narayana Rao
Separation Science Plus, 2024
Catalysis in SDS and CTAB micellar media: Kinetics of base hydrolysis of Bis(2,4,6-tripyridyl-striazine) iron (II)
Kumari B., Leela, P. Shyamala, K.V. Nagalakshmi
Research Journal of Chemistry and Environment, 2024
Novel Pyrrolo-Pyrimidine Derivatives Bearing Amide Functionality as Potential Anticancer Agents: Synthesis and Molecular Docking Studies
Praveen Kumar Bandaru, N.S. Kameswara Rao, P. Shyamala
Asian Journal of Chemistry, 2024
Cloud Point Extraction Method for Separation and Pre-concentration of Molybdenum and Zirconium Using Mixture of Surfactants from Natural Waters and their Determination by Spectrophotometry
, K.V. Nagalakshmi, P. Shyamala, , Sk. Ameer Khan, , Deva H Puranam, and
Methods and Objects of Chemical Analysis, 2024
Green synthesized Fe3O4@CD nanocomposites using Acacia caesia leaves: In vitro biological properties and cytotoxicity assessment
M. Padmaja, P. Shyamala, V. Durga Praveena, G. Tejaswini
Next Nanotechnology, 2024
Chemical Modelling Potentiometric Study on the Complex Formation of Ditopic Sebacic Acid Dihydrazide with Co2+ and Ni2+ in Aqueous Medium
Rama Krishna Saladi, Shyamala Pulipaka, Satyanarayana Atreyapu
Research Journal of Chemistry and Environment, 2023
Magnetic and Magnetostrictive Properties of Sol–Gel-Synthesized Chromium-Substituted Cobalt Ferrite
Chandra Sekhar Beera, B. Dhanalakshmi, D. Nirmala Devi, D. Vijayalakshmi, Akanksha Mishra, S. Ramesh, B. Parvatheeswara Rao, P. Shyamala, Melita Menelaou, Nadyah Alanazi, Abdullah N. Alodhayb
Gels, 2023
Semi-empirical calculations and potentiometric studies on complexation equilibria of 2,2’-Bipyridyl in SDS and TBAB micellar media
P.S.S. Chakravarthi, P. Shyamala, Rao G. Nageswara, V. Srikanth
Research Journal of Chemistry and Environment, 2023
Characterization of famotidine API and simultaneous Quantification of its organic impurities by UPLC
Gudibanda Chandrasekhar Reddy, Pulipaka Shyamala, Rallabhandi Murali Krishna, Kapavarapu Maruthi Venkata Narayanarao, Mannem Durga Babu
Research Journal of Pharmacy and Technology, 2023
Simultaneous Gas Chromatographic Analysis of Isopropyl Alcohol, t-Butanol, 2-Bromo Propane, Toluene and Acetic Acid in Teneligliptin Drug
Durgababu Rapeti, Kapavarapu Maruthi Venkata Narayanarao, Pulipaka Shyamala, Rallabhandi Murali Krishna
Research Journal of Pharmacy and Technology, 2023
Iron-Catalysed [3+3] Annulation of Oxime Acetates and Enaminones towards the Synthesis of Multi-Substituted Pyridines
Varaprasad Bodala, Rajitha Lakshmi Podugu, Kumari Yettula, Padmarao Gollamudi, Siddaiah Vidavalur, Shyamala Pulipaka
Chemistry an Asian Journal, 2023
Effect of AOT/Heptane Reverse Micelles on Oxidation of Ferroin by Metaperiodate: Kinetic and Mechanistic Aspects
Leela Kumari BODASİNGİ, Shyamala PULİPAKA, Venkata Nagalakshmi KİLANA
Journal of the Turkish Chemical Society Section A Chemistry, 2023
An efficient, concise, and scalable synthesis of Izenamide A and B via asymmetric reduction of γ-amino β-keto ester using 2-methyl-CBS-oxazaborolidine catalysts
Malapati Venkateswara Reddy, P. Shyamala, Arvind Kumar Sharma
Results in Chemistry, 2023
Assessment of Seven Process Associated Solvent Impurities and two by-Product Associated Solvent Impurities in Ibandronate Sodium Bulk Material and Commercial Product Employing Gas Chromatography
Siddabathuni Ramanjaneyulu, K.M.V. Narayana Rao, Shyamala Pulipaka
Research Journal of Pharmacy and Technology, 2023
The Effect of Aurintricarboxylic Acid (ATA) and Copper-aurin-tricarboxylic Acid Complex (Cu-ATA) for Selective Inhibition on the Growth of Gram-positive and Gram-negative Bacteria
Chakravarthi Pss, GV Ramana
Journal of Food Chemistry and Nanotechnology, 2023
OXIDATION OF ANILINE BY IRON (III) IN THE PRESENCE OF BIPYRIDYL IN SDS/ TRITON X-100 MIXED MICELLES. APPLICABILITY OF BEREZIN PSEUDO PHASE MODEL
Journal of Chemical Technology and Metallurgy, 2023
Determination of thermodynamic parameters for surfactant mediated cloud point extraction of Brilliant cresyl blue dye in aqueous solutions
Khan Sk. Ameer, P. Shyamala, Murthy M. Krishna
Research Journal of Chemistry and Environment, 2022
Residual Solvents by GC-HS Procedure for Etoricoxib: Method Development and Validation Report
Komali Sivaprasad, Vardhani Devi Duggirala Parvatha Venkata, Kapavarapu Maruthi Venkata Narayanarao, Pulipaka Shyamala
Research Journal of Pharmacy and Technology, 2022
A fast, validated UPLC method coupled with PDA-QDa detectors for impurity profiling in betamethasone acetate and betamethasone phosphate injectable suspension and isolation, identification, characterization of two thermal impurities
P. Murali Krishnam Raju, P. Shyamala, B. Venkata Narayana, H.S.N.R. Dantuluri, R.V. Bhupatiraju
Annales Pharmaceutiques Francaises, 2022
Determination of Naphthol Yellow S and Chromotrope 2B at trace levels by spectrophotometry after mixed micellar cloud point extraction using TX-114 and TBAB
D. Suneetha, P. Shyamala
Research Journal of Chemistry and Environment, 2022
DETERMINATION OF AURINTRICARBOXYLIC ACID (A VIRAL INHIBITOR) USING MIXED MICELLAR CLOUD POINT EXTRACTION PROCEDURES
RADHA KRIS DIMMITI, AMEER KHAN SHAIK, SHYAMALA PULIPAKA
International Journal of Applied Pharmaceutics, 2022
Assessment of Novel Stability-Indicating Technique-based HPLC Approach for One Genotoxic Impurity and Three Related Substance Impurities of Lurasidone Hydrochloride: Degradation Studies on Lurasidone Hydrochloride
Siddabathuni Ramanjaneyulu, K.M.V. Narayana Rao, Shyamala Pulipaka
Asian Journal of Chemistry, 2022
Characterization of Loratadine API and Simultaneous Quantification of Seven Potential Genotoxic Nitrosamine Impurities in Single Method by LC-MS/MS in Loratadine API and its Dosage Forms
Gudibanda Chandrasekhar Reddy, Pulipaka Shyamala, Rallabhandi Murali Krishna, Kapavarapu Maruthi Venkata Narayanarao, Mannem Durga Babu
Asian Journal of Chemistry, 2022
ADSORPTIVE MICELLAR FLOCCULATION AND CLOUD POINT EXTRACTION AS PRE-CONCENTRATION METHODS FOR THE DETERMINATION OF PHENOSAFRANINE DYE IN AQUEOUS SOLUTIONS
K. Arunakumari, P. Shyamala, SK. Ameerkhan, D. B. N. S. Varma
Rasayan Journal of Chemistry, 2022
ISOLATION AND STRUCTURAL ELUCIDATION OF SACUBITRIL SODIUM DEGRADATION PRODUCTS BY MASS AND NMR SPECTROSCOPY
K. Sivaprasad, K. M. V. Narayana Rao, P. Shyamala, D.P.V.V. Devi
Rasayan Journal of Chemistry, 2022
Shorter and Rugged Analytical GC Method for Residual Solvents Content in Active Pharmaceutical Ingredient
S Ramanjaneyulu, K M V Narayana Rao, Shyamala Pulipaka
Journal of Chromatographic Science, 2022
Environmental Impact of Shrimp Pond Effluents on Water Quality and Phytoplankton Biomass in a Tropical Mangrove Estuary
Indian Journal of Environmental Protection, 2022
OXIDATION OF [Fe(phen)3]+2 BY PERIODATE: KINETIC STUDY IN THE WATER POOLS OF CTAB REVERSE MICELLES
Journal of Chemical Technology and Metallurgy, 2022
CHEMICAL MODELLING STUDIES ON CALCIUM (II) AND MAGNESIUM (II) COMPLEXES OF SUCCINIC ACID DIHYDRAZIDE (A DITOPIC LIGAND) IN AQUEOUS MEDIUM
Journal of Chemical Technology and Metallurgy, 2022
CTAB Reverse Micelles as Catalysts for the Oxidation of Ascorbic Acid by K3[Fe(CN)6]
K. Bhargavi, P. Shyamala, P S S Chakravarthi, K V Nagalakshmi
Bulletin of Chemical Reaction Engineering and Catalysis, 2022
Assay of tirofiban and identification of oxidative impurity in aqueous injection by using UPLC-PDA/QDa detectors
P. Murali Krishnam Raju, P. Shyamala, B. Venkata Narayana, S. Kondra, B.P.V. Mantena
Annales Pharmaceutiques Francaises, 2022
Kinetic study of SN2 reaction between paranitrophenyl benzoate and hydrazine in the presence of CTAB reverse micelles
K. Bhargavi, P. Shyamala, M. Padma, K. V. Nagalakshmi
Bulletin of Chemical Reaction Engineering and Catalysis, 2021
Method Development and Validation for Pyrogallol Content Quantification by HPLC in Trimetazidine Dihydrochloride
Durgababu Rapeti, Kapavarapu Maruthi Venkata Narayanarao, Pulipaka Shyamala, Rallabhandi Murali Krishna
Research Journal of Pharmacy and Technology, 2021
Kinetics of Base Hydrolysis of Bis(2,2' : 6',2''-Terpyridine)Iron(II) Complex in the Water Pools of CTAB Reverse Micelles
M. Padma, P. Shyamala, K. Bhargavi, K. V. Nagalakshmi
Russian Journal of Physical Chemistry B, 2021
A Study on Distribution of Water Quality Parameters in Potable/Ground Waters of Visakhapatnam Coastal Region with Multivariate Factor Analysis
V.V.K.P.L.N. Murty, P. V.S. Machiraju, P. Shyamala, A. Vinod Kumar
Asian Journal of Chemistry, 2021
Determination of thermodynamic parameters for cloud point extraction of Arsenazo-III and Magdala Red dyes using mixed micelles: An essential requirement for high performance
Sk Ameer Khan, D. Radha Krishna, P. Shyamala
Journal of the Indian Chemical Society, 2021
Determination of protonation constants of viral inhibitor, aurintricarboxylic acid in sds and CTAB micellar media: A potentiometric study
K. Bhargavi, P. Shyamala, G. Nageswara Rao
Asian Journal of Chemistry, 2021
Solvent effect on protonation equilibria of l-histidine and 1,10- phenanthroline in 1-propanol-water mixtures
Research Journal of Chemistry and Environment, 2021
Potentiometric determination of stability constants of ternary complexes of first row transition metal ions with ditopic azelaic acid dihydrazide and aspartic acid in aqueous medium
D. Nirmala Devi, P. Shyamala, B. Uma Rani, A. Satyanarayana
Journal of the Indian Chemical Society, 2021
Copper-catalyzed efficient access to 2,4,6-triphenyl pyridinesviaoxidative decarboxylative coupling of aryl acetic acids with oxime acetates
Bodala Varaprasad, Karasala Bharat Kumar, Vidavalur Siddaiah, Pulipaka Shyamala, Lekkala Chinnari
New Journal of Chemistry, 2021
Cloud point extraction and spectrophotometric studies for the extraction of nigrosin and aniline blue dyes using mixed micelles of tbab and triton x-114
D. Radhakrishna, D. Suneetha, P. Shyamala
Asian Journal of Chemistry, 2021
Comparison of the absorption characteristics of coloured dissolved organic matter between river and wave dominated distributaries of Godavari estuary, India
N V H K Chari, Ch Venkateswararao, P Shyamala
Journal of Earth System Science, 2021
Identification of the organic volatile impurities in ezitamibe using GC-HS technique
Durgababu Rapeti, Kapavarapu Maruthi Venkata Narayanarao, Pulipaka Shyamala, Rallabhandi Murali Krishna
Asian Journal of Chemistry, 2021
Photocatalytic degradation of polyethylene plastics by NiAl2O4 spinels-synthesis and characterization
Challarapu Venkataramana, Sathish Mohan Botsa, P. Shyamala, R. Muralikrishna
Chemosphere, 2021
KINETICS OF BASE HYDROLYSIS OF TRIS(1,10-PHENANTHROLINE) IRON (II) COMPLEX IN THE PRESENCE OF MIXED SURFACTANTS OF SODIUM DODECYL SULPHATE AND TRITON X- 100: SYNERGISM AND CATALYTIC PROPERTY OF MIXED MICELLES
Journal of Chemical Technology and Metallurgy, 2021
Chemical Speciation study of Ternary complexes of Zn(II)-Azelaic acid dihydrazide-L-Proline and Zn(II)-Azelaic acid dihydrazide-L-Lysine in aqueous medium
Devi D. Nirmala, P. Shyamala, Rani B. Uma, A. Satyanarayana
Research Journal of Chemistry and Environment, 2021
A validated RP-HPLC method for impurity profiling of sodium nitroprusside in injection dosage form
MURALI KRISHNAM RAJU P., VENKATA NARAYANA B., SHYAMALA P., SRINIVASU KONDRA, HSN RAJU DANTULURI
International Journal of Applied Pharmaceutics, 2021
Acid hydrolysis of bis(2,2'; 6',2''-Terpyridyl) iron(II) complex in the water pools of CTAB/hexane/chloroform reverse micelles-a kinetic study in confined medium
K. V. Nagalakshmi, P. Shyamala
Bulletin of Chemical Reaction Engineering and Catalysis, 2020
Kinetics of dissociation of bis(2,4,6-tripyridyl-s-triazine)iron(II) and tris(2,2′-bipyridyl)iron(II) in the presence of triton x-100/tween 80 mixed micellar medium
R.S.S. Srikanth Vemuri, P. Shyamala, Sk. Ameer Khan
Asian Journal of Chemistry, 2020
Distribution of uranium in drinking/ground waters in Narsipatnam Revenue Division of Visakhapatnam District of Andhra Pradesh, India and consequent ingestion dose
P. V. S. Machiraju, V. V. K. P. L. N. Murty, P. Shyamala
Journal of Radioanalytical and Nuclear Chemistry, 2020
Effect of cetylammonium bromide micelles on decolouration of rosaniline hydrochloride by periodate: Experimental and theoretical approach
Journal of the Indian Chemical Society, 2020
HPLC estimation of new impurity methyl ezetimibe in ezetimibe drug
Duggirala Parvatha Venkata Vardhani Devi, Kapavarapu Maruthi Venkata Narayanarao, Pulipaka Shyamala, Rallabhandi Murali Krishna, Komali Siva Prasad
Asian Journal of Chemistry, 2020
Effect of CTAB reverse micelles on the kinetics of aminolysis of p-nitrophenyl acetate by Hydrazine
Journal of the Indian Chemical Society, 2020
Assessment of fourteen elemental impurities in doxapram hydrochloride drug using inductively coupled plasma mass spectrometry
International Journal of Scientific and Technology Research, 2020
Determination of 1,2-dibromoethane in tramadol hydrochloride drug substances by head space gas chromatography linked with mass spectrometry
International Journal of Pharmaceutical Research, 2020
Catanionic mixed micellar cloud point extraction of metal ions in coal fly ash samples and their determination by CS-ETAAS
Ravi Kumar K., Shyamala P.
Journal of Environmental Chemical Engineering, 2019
Kinetics of oxidation of [Fe(phen)3]+2 by persulphate: Catalysis in the water pools of CTAB reverse micelles
Bulgarian Chemical Communications, 2019
Mixed micellar cloud point extraction and spectrophotometric determination of meldola's blue dye in tap and sea water samples
D. Suneetha, P. Shyamala, SK. Ameer Khan
Asian Journal of Chemistry, 2019
Mixed micellar cloud point extraction and spectrophotometric determination of iron(II) using 1,10-phenanthroline: Effect of sodium nitroprusside on extraction efficiency
K. Ravi Kumar, SK. Ameer Khan, P. Shyamala
Asian Journal of Chemistry, 2019
Kinetic study of the oxidation of thiosulphate by hexacyanoferrate(III) in water pools of cetyl trimethyl ammonium bromide reverse micelles
Journal of Chemical Technology and Metallurgy, 2019
Mononuclear binary complex formation equilibria of L-ornithine with biologically essential metals in TBAB micellar media
A.G. ATNAFU, R. SRINIVASU, P. SHYAMALA, G. NAGESWARA RAO
Asian Journal of Chemistry, 2019
Analytical method development and validation of genotoxic impurity, 2-chloropropane, in tramadol hydrochloride drug substance using head space gas chromatography
International Journal of Scientific and Technology Research, 2019
Development of new cloud point extraction procedure using mixed micelles of TX-114 and DOSS for the determination of azocarmine G
Journal of the Indian Chemical Society, 2018
A novel synergetic salt- and acid-induced ligandless mixed micelle cloud point extraction of ultratrace levels of Cd, Hg, Bi, and Tl from petrochemical effluents followed by ETAAS determination
Atomic Spectroscopy, 2018
Kinetics of oxidation of toluidine blue by periodate: Catalysis by water pools of CTAB
K.V. Nagalakshmi, P. Shyamala, P.V. Subba Rao
Current Chemistry Letters, 2018
Kinetics of oxidation of toluidine blue by periodate: Catalysis by water pools of CTAB
Current Chemistry Letters, 2018
Chemical speciation studies on aurintricarboxylic acid complexes of AlIII, GaIII and InIII in solution phase : A prerequisite for analytical determinations
Journal of the Indian Chemical Society, 2018
Catalytic effect of AOT/heptane and CTAB/CHCl3/hexane reverse micelles the fading of rosaniline hydrochloride by periodate
Journal of the Indian Chemical Society, 2017
Cloud point extraction with mixed micelles of TX-114/ DOSS and derivative spectrophotometry for simultaneous determination of Fe2+and Co2+using 2,2′,6′,2′′-terpyridine
Indian Journal of Chemistry Section A Inorganic Physical Theoretical and Analytical Chemistry, 2016
Catalysis by AOT reverse micelles - Kinetics of aquation of bis(2,4,6-tripyridyl-s-triazine)iron(II) and acid hydrolysis of 2,2′,6,6″ terpyridyl iron(II) in the presence of AOT/heptane
Indian Journal of Chemistry Section A Inorganic Physical Theoretical and Analytical Chemistry, 2016
Catalytic effect of CTAB reverse micelles on the oxidation of indigo carmine by periodate
Indian Journal of Chemistry Section A Inorganic Physical Theoretical and Analytical Chemistry, 2015
Catalytic effect of CTAB reverse micelles on the reduction of methylene blue by ascorbic acid
Journal of the Indian Chemical Society, 2014
Speciation study on the interaction of some divalent transition metal ions with succinic acid dihydrazide in aqueous medium
Acta Chimica Slovenica, 2013
Kinetics of oxidation of hydroxylamine by iron(III) in the presence of 2,2?-bipyridyl in the water pools of CTA B reverse micelles and conventional aqueous medium
Oxidation Communications, 2013
Catalytic effect of CTAB reverse micelles on the kinetics of dissociation of bis(2,4,6-tripyridyl-s-triazine) iron(II)
K. V. Nagalakshmi, M. Padma, P. Shyamala, V. Srikanth, A. Satyanarayana, P. V. SubbaRao
Transition Metal Chemistry, 2013
Catalytic effect of CTAB reverse micelles on the reduction of toluidine blue by ascorbic acid
Indian Journal of Chemistry Section A Inorganic Physical Theoretical and Analytical Chemistry, 2013
Alkaline hydrolysis of isatin in the presence of mixed CTAB and Triton X-100 micellar systems: Micellisation and kinetic investigations
Indian Journal of Chemistry Section A Inorganic Physical Theoretical and Analytical Chemistry, 2012
Spectrophotometric determination of Neodymium(III), Samarium(III), Gadolinium(III), Terbium (III), Dysprosium (III), Holmium (III) in micellar media
Indian Journal of Chemical Technology, 2012
Spectrophotometric determination of neodymium(III), samarium(III) in micellar medium - An alternative to solvent extraction procedures
Journal of the Indian Chemical Society, 2011
Kinetics of oxidation of iodide by vanadium (V): Catalysis by the water pools of CTAB reverse micelles
P. Shyamala, P. V. Subba Rao
Kinetics and Catalysis, 2010

Dr.P.SHYAMALA

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