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Chauhan, R. S.
- Spectrophotometric Methods for Simultaneous Estimation of Meclizine Hydrochloride and Caffeine in their Combined Tablet Dosage Form
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Authors
Affiliations
1 Department of Quality Assurance, Maliba Pharmacy College, Bardoli-Mahuva Road, Tarsadi, Dist. Surat, 394 350, Gujarat, IN
1 Department of Quality Assurance, Maliba Pharmacy College, Bardoli-Mahuva Road, Tarsadi, Dist. Surat, 394 350, Gujarat, IN
Source
Asian Journal of Research in Chemistry, Vol 4, No 8 (2011), Pagination: 1249-1253Abstract
Two simple spectrophotometric methods have been developed for simultaneous estimation of meclizine hydrochloride and caffeine from tablet dosage form. Method I i s a n absorbance correction method in which absorbance is measured at two wavelengths, 288 nm at which meclizine hydrochloride has no absorbance and 236 nm at which both the drugs have considerable absorbance. Method II i s simultaneous equation method which involves two wave lengths , 236 nm (for measurement of meclizine hydrochloride) and 273 nm (for measurement of caffeine). Both the methods were found linear between the range of 4-20 μg/ml for caffeine and 5-25 μg/ml for meclizine hydrochloride. The accuracy and precision were determined and found to comply with ICH guidelines. Both the methods showed good reproducibility and recovery with % RSD in the desired range. The methods were found to be rapid, specific, precise and accurate and can be successfully applied for the routine analysis of meclizine hydrochloride and caffeine in their combined tablet dosage form.Keywords
Meclizine Hydrochloride, Caffeine, Absorbance Correction Method, Simultaneous Equation Method.- Polarographic Study of La (III)-3-Hydroxy-3-P-Chlorophenyl-1-PSulphonato (Sodium Salt) Phenyltriazene Complex
Abstract Views :180 |
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Authors
Dipen Upadhyay
1,
Pooja Joshi
1,
Neelam Pareek
1,
Girdharpal Singh
1,
A. K. Goswami
1,
R. S. Chauhan
1
Affiliations
1 Department of Chemistry, M.L. Sukhadia University, Udaipur -313001 (Raj.), IN
1 Department of Chemistry, M.L. Sukhadia University, Udaipur -313001 (Raj.), IN
Source
Asian Journal of Research in Chemistry, Vol 4, No 6 (2011), Pagination: 984-985Abstract
The electrochemical behavior of complex of La (III) with 3-hydroxy-3-p-chlorophenyl-1-p-sulphonato (sodium salt) phenyltriazene (HCST) was studied. It was observed that HCST forms 1:1 complex with La (III) in Citric acid and Na2HPO4 buffer solution between pH 6.0 to 7.5. It was found that the reduction process of La (III) - HCST complex is three electron reversible reduction process. The stability constant of the 3-hydroxy-3-p-chlorophenyl-1-p-sulphonato (sodium salt) phenyltriazene complex was evaluated with the Lingane method at different ligand concentrations. The logarithm value of stability constant of 1:1 La (III) - HCST complex is 18.78.Keywords
Hyroxytriazene, Polarography, La (III) - HCST Complex.- Polarographic Studies on Ni (II) Chelates of 3-Hydroxy-3-Phenyl-1-p- Sulfonato (Sodium Salt) Phenyltriazene and 3-Hydroxy-3-p-Tolyl-1-p- Sulfonato (Sodium Salt) Phenyltriazene
Abstract Views :205 |
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Authors
Neelam Pareek
1,
Pooja Joshi
1,
Dipen Upadhyay
1,
Girdharpal Singh
1,
R. S. Chauhan
1,
A. K. Goswami
1
Affiliations
1 Coordination Chemistry Lab., Dept. of Chemistry, M.L. Sukhadia University, Udaipur – 31 3001 (Raj.), IN
1 Coordination Chemistry Lab., Dept. of Chemistry, M.L. Sukhadia University, Udaipur – 31 3001 (Raj.), IN
Source
Asian Journal of Research in Chemistry, Vol 4, No 4 (2011), Pagination: 558-559Abstract
Polarographic studies of Ni (II) - 3-hydroxy-3-phenyl-1-p-sulfonato (sodium salt) phenyltriazene (HPST) and Ni (II) - 3-hydroxy-3-p-tolyl-1-p-sulfonato (sodium salt) phenyltriazene (HTST) have been done in aqueous medium. The study deals with influence of methyl group at para position of the present compounds, upon the stabilities of the metal chelates formed by them. Both systems are reversible and diffusion controlled in nature.
Keywords
Ni (II) - 3-Hydroxy-3-Phenyl-1-P-Sulfonato (Sodium Salt) Phenyltriazene, 3-Hydroxy-3-P-Tolyl-1-Psulfonato (Sodium Salt) Phenyltriazene, Polarographic Reduction, Chelate.- Spectrophotometric Methods for Simultaneous Estimation of Drotaverine Hydrochloride and Aceclofenac in their Combined Tablet Dosage Form
Abstract Views :177 |
PDF Views:1
Authors
Affiliations
1 Dept. of Quality Assurance, Maliba Pharmacy College, Bardoli-Mahuva Road, Tarsadi-394350, Dist. Surat, Gujarat, IN
1 Dept. of Quality Assurance, Maliba Pharmacy College, Bardoli-Mahuva Road, Tarsadi-394350, Dist. Surat, Gujarat, IN