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Venkata SubbaRao Devarakonda

Venkata SubbaRao Devarakonda

About

18
Publications
6,413
Reads
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243
Citations
Citations since 2016
0 Research Items
73 Citations
2016201720182019202020212022051015
2016201720182019202020212022051015
2016201720182019202020212022051015
2016201720182019202020212022051015
Introduction
Skills and Expertise
Additional affiliations
June 2011 - present
Sciegen Pharmaceuticals
Sciegen Pharmaceuticals
Position
  • Sr.Manager

Publications

Publications (18)
Article
The objective of the current study was to develop a validated, specific and stability-indicating reverse phase liquid chromatographic method for the quantitative determination of acetazolamide and its related substances. The determination was done for an active pharmaceutical ingredient, its pharmaceutical dosage form in the presence of degradation...
Article
Full-text available
The objective of the current study was to develop a validated, specific and stability-indicating reverse phase liquid chromatographic method for the quantitative determination of fluocinonide and its related substances. The determination was done for active pharmaceutical ingredient and its pharmaceutical dosage forms in the presence of degradation...
Article
A simple, rapid and sensitive high performance liquid chromatographic method was developed for the separation and quantification of positional isomers of zafirlukast in bulk drugs and dosage forms using a chiral column. Elution time was 20min in normal phase mode and ultra violet detection was carried out at 240nm. Efficient separation was achieved...
Article
A novel liquid chromatographic method has been developed and validated for the determination of ranolazine, its potential four impurities in drug substance and drug products. Efficient chromatographic separation was achieved on a C18 stationary phase (150×4.6mm, 3.0microns particles) with simple mobile phase combination delivered in gradient mode a...
Article
A novel liquid chromatographic method for analysis three potential impurities in brimonidine tartrate drug substance has been developed and validated. Efficient chromatographic separation was achieved on a C8 column (250mm×4.6mm, 5-μm particles) with a simple mobile-phase gradient at a flow rate of 1.0mLmin−1. Quantification was achieved by use of...
Article
An isocratic normal phase high-performance liquid chromatographic (NP-HPLC) method has been developed and validated for the quantitation of Z-isomer in lanoconazole. Separation was achieved with a Thermo Hypersil Silica column. The ratio of 2-propanol, n-hexane and triethylamine in the mobile phase were optimized to obtain the best separation. UV d...
Article
A new and accurate chiral liquid chromatographic method has been developed for the separation of Ezetimibe and its (R, S, R)-enantiomer in bulk drugs and pharmaceutical dosage forms. Normal phase chromatographic separation was performed on an immobilized cellulose based chiral stationary phase (Chiralpak-IC) with n-hexane: isopropyl alcohol: triflu...
Article
A new and accurate chiral liquid chromatographic method has been developed for the separation of palonosetron hydrochloride (PALO) and its (R,R)-enantiomer in bulk drug samples with an elution time of about 20 min. The chromatographic separation was carried out by normal phase chromatography using an immobilized cellulose based chiral stationary ph...
Article
A simple, sensitive gradient RP-LC assay method has been developed for the quantitative determination of vardenafil HCl in bulk drug and in pharmaceutical dosage forms, used to treat erectile dysfunction. The developed method is also applicable for the related substances determination. Efficient chromatographic separation was achieved on a C18 stat...
Article
A simple, sensitive gradient RP-LC assay method has been developed for the quantitative determination of amtolmetin guacyl in bulk drug, used as anti-inflammatory drug. The developed method is also applicable for related substances determination. Efficient chromatographic separation was achieved on a C18 stationary phase with simple mobile phase co...
Article
A new and accurate chiral liquid chromatographic method has been developed for the separation and quantification of (S,R,S)-enantiomer (unwanted enantiomer) and (R,R,R)-isomer (key intermediate) of aprepitant in bulk drug and formulation samples of apprepitant. The elution time was approximately 20min using an immobilized amylose-based chiral stati...
Article
A new and accurate chiral liquid chromatographic method has been developed for determination of the enantiomeric purity of montelukast sodium (R enantiomer) in bulk drugs and dosage forms. Normal phase chromatographic separation was performed on an immobilized amylose-based chiral stationary phase with n-hexane–ethanol–1,4-dioxane–trifluoroacetic a...
Article
A simple stability-indicating LC method has been developed for the quantitative determination of dutasteride in bulk drug samples and in pharmaceutical dosage forms in the presence of degradation products. The retention time of dutasteride is about 7min. The drug was subjected to stress conditions of hydrolysis, oxidation, photolysis and thermal de...
Article
An isocratic reversed phase liquid chromatographic (RP-LC) method has been developed and subsequently validated for the determination of almotriptan malate and its process-related impurities. Separation was achieved with a Phenomenex, Gemini, C-18 column and sodium phosphate buffer (pH adjusted to 7.6): acetonitrile (80:20, v/v) as eluent, at a flo...
Article
A new and accurate chiral liquid chromatographic method has been developed for the determination of enantiomeric purity of darifenacin [(S)-enantiomer] in bulk drugs and extended release tablets. Normal phase chromatographic separation was performed on an immobilized cellulose based chiral stationary phase (Chiralpak-IC) with n-hexane:ethanol:dieth...
Article
An isocratic reversed-phase liquid chromatographic method has been developed for quantitative determination of candesartan cilexetil, used to treat hypertension, in the bulk drug and in pharmaceutical dosage forms. The method is also applicable to analysis of related substances. Chromatographic separation was achieved on a 250mm×4.6mm, 5μm particle...
Article
A stability-indicating HPLC assay method was developed for the quantitative determination of tadalafil in bulk samples and in pharmaceutical dosage forms in the presence of the degradation products. It involved a 250mm×4.6mm, 5μm C-18 column. The gradient LC method employs solution A and B as mobile phase. Solution A contains a mixture of buffer (p...

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