Abstract
The new simple, precise, rapid, selective, high performance thin layer chromatography method has been developed for simultaneous estimation of cetirizine hydrochloride and phenylephrine hydrochloride in its combined solid dosage form. The HPTLC method was performed on precoated silica gel G60 F254 plates with, Toluene: Methanol: Ammonia (8: 2: 1, v/v/v) as optimum mobile phase. The plates were developed in 6.00× 0.30mm at room temperature. The developed plates were scanned and quantified at their absorption at 224 nm for CET and PHE respectively. The drugs were satisfactorily resolved with Rf = 0.36± 0.001 for CET and 0.65±0.004 for PHE. Calibration plot was linear between 100-600 ng/ spot for CET and 200-1200 ng/ spot for PHE. This HPTLC method is sensitive, economical, less time consuming than other chromatographic procedures. It can become important tool for analysis of combined solid dosage from. In addition to this results acid exposure, base exposure, oxidative exposure, neutral exposure, photolysis and dry heat exposure is carried out.
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