On June 30, 2013, Seshadri, Raja Kumar; Raghavaraju, Thummala Veera; Chakravarthy, Ivon Elisha published an article.Category: imidazoles-derivatives The title of the article was A single gradient stability-indicating reversed-phase LC method for the estimation of impurities in omeprazole and domperidone capsules. And the article contained the following:
A gradient reversed-phase liquid chromatog. (RP-LC) method was developed for the quant. estimation of impurities in the pharmaceutical dosage form of Omeprazole and Domperidone capsules. The developed method is a stability-indicating test method for the estimation of impurities generated during the formulation and storage of Omeprazole and Domperidone capsules. The chromatog. separation was achieved on a column packed with octadecyl silane, having a column length of 250 mm and diameter of 4.6 mm with a particle size of 5 μm, and by following a gradient program using a combination of a monobasic potassium phosphate buffer (0.05M) and acetonitrile. Since the spectral properties were similar, both compounds’ individual impurities were estimated at 285 nm. Forced degradation studies were performed on Omeprazole pellets (enteric coated) and Domperidone pellets (SR coated) encapsulated in size “1” hard gelatin capsules. Omeprazole and Domperidone were degraded using acid hydrolysis (0.1 N hydrochloric acid), base (0.1 N sodium hydroxide), oxidation (50% hydrogen peroxide), heat (105 °C), and UV light (254 nm). The established method was validated and found to be linear, accurate, precise, specific, robust, and rugged. The experimental process involved the reaction of 5-Methoxy-2-[[(4-methoxy-3,5-dimethyl-2-pyridyl)methyl]thio]benzimidazole(cas: 73590-85-9).Category: imidazoles-derivatives
The Article related to omeprazole domperidone impurity determination rp hplc capsule degradation, domperidone, forced degradation, method validation, omeprazole, rp-lc, Pharmaceutical Analysis: Synthetic Organic Compounds and other aspects.Category: imidazoles-derivatives
Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem