scholarly journals Development of a novel stability indicating RP-HPLC method for quantification of Connexin43 mimetic peptide and determination of its degradation kinetics in biological fluids

2017 ◽  
Vol 7 (6) ◽  
pp. 365-373
Author(s):  
Rohit Bisht ◽  
Ilva D. Rupenthal ◽  
Sreevalsan Sreebhavan ◽  
Jagdish K. Jaiswal
Keyword(s):  
Degradation Kinetics ◽  
Biological Fluids ◽  
Hplc Method ◽  
Mimetic Peptide ◽  
Stability Indicating ◽  
Rp Hplc

scholarly journals Stability-indicating RP-HPLC method for determination of beclomethasone dipropionate in nanocapsule suspensions

2015 ◽  
Vol 51 (4) ◽  
pp. 803-810 ◽  
Author(s):  
Janaíne Micheli Chassot ◽  
Luana Mota Ferreira ◽  
Felipe Pereira Gomes ◽  
Letícia Cruz ◽  
Leandro Tasso
Keyword(s):  
Mobile Phase ◽  
Beclomethasone Dipropionate ◽  
Degradation Products ◽  
Degradation Kinetics ◽  
Hplc Method ◽  
Stability Indicating ◽  
Rp Hplc ◽  
Relative Standard ◽  
Bulk Drug

abstract A simple stability-indicating RP-HPLC/UV method was validated for determination of beclomethasone dipropionate (BD) in nanocapsule suspensions. Chromatographic conditions consisted of a RP C18column (250 mm x 4.60 mm, 5 µm, 110 Å), using methanol and water (85:15 v/v) as mobile phase at 1.0 mL/min with UV detection at 254 nm. The calibration curve was found to be linear in the concentration range of 5.0-25.0 µg/mL with a correlation coefficient > 0.999. Precision was demonstrated by a relative standard deviation lower than 2.0%. Accuracy was assessed by the recovery test of BD from nanocapsules (98.03% to 100.35%). Specificity showed no interference from the components of nanocapsules or from the degradation products derived from acid, basic and photolytic conditions. In conclusion, the method is suitable to be applied to assay BD in bulk drug and in nanocapsules, and it can be employed to study stability and degradation kinetics.

scholarly journals A new stability-indicating RP-HPLC method for the determination of dicyclomine hydrochloride and dimethicone combination in tablet dosage forms

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
J. Saroja ◽  
Anantha Lakshmi P.V. ◽  
Y. Rammohan ◽  
D. Divya Reddy
Keyword(s):  
Liquid Chromatography ◽  
Dosage Forms ◽  
Flow Speed ◽  
Hplc Method ◽  
Stability Indicating ◽  
Simultaneous Quantification ◽  
Rp Hplc ◽  
Tablet Formulations ◽  
Tablet Dosage

Abstract Background We describe a “stability-indicating liquid chromatography” technique for the estimation of dimethicone (DEC) and dicyclomine hydrochloride (DEH) in the established tablet formulations. Individual quantification of DEH and DEC was reported. But simultaneous quantification of DEH and DEC was lacking. DEH and DEC were analysed on an “XTerra C18 column (250 mm × 4.6 mm, 5 μm)” with the mobile phase solvent run isocratically with 0.1M K2HPO4-acetonitrile (55:45, v/v) on a flow speed of 1.0 mL/min. Results The chromatographic run period for the DEC and DEH assay was 6.0 min with retention times of 2.134 and 2.865 min, respectively. The method was validated for accuracy (99.453 to 100.417% and 99.703 to 100.303% recovery values for DEH and DEC, respectively), precision (RSV value 0.135% for DEC and 0.171% for DEH), linearity (5–15 μg/mL for DEH and 20–60 μg/mL for DEC), selectivity (no hinderance from excipients) and specificity (no hinderance from degradants) recovery. Conclusion The developed stability-indicating liquid chromatography process was well applied to established tablet formulations.

scholarly journals Stability Indicating RP-HPLC Method for Determination of Valsartan in Pure and Pharmaceutical Formulation

2010 ◽  
Vol 7 (1) ◽  
pp. 246-252 ◽  
Author(s):  
S. K. Patro ◽  
S. K. Kanungo ◽  
V. J. Patro ◽  
N. S. K. Choudhury
Keyword(s):  
Linear Response ◽  
Mobile Phase ◽  
Hplc Method ◽  
Forced Degradation ◽  
Control Analysis ◽  
Solution Stability ◽  
Stability Indicating ◽  
Quality Control Analysis ◽  
Rp Hplc

A simple, rapid and accurate and stability indicating RP-HPLC method was developed for the determination of valsartan in pure and tablet forms. The method showed a linear response for concentrations in the range of 50-175 µg/mL using 0.01 M NH4H2PO4(pH 3.5) buffer: methanol [50:50] as the mobile phase with detection at 210 nm and a flow rate of 1 mL/min and retention time 11.041 min. The method was statistically validated for accuracy, precision, linearity, ruggedness, robustness, forced degradation, solution stability and selectivity. Quantitative and recovery studies of the dosage form were also carried out and analyzed; the % RSD from recovery studies was found to be less than 1. Due to simplicity, rapidity and accuracy of the method, we believe that the method will be useful for routine quality control analysis.

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