title: Determination of degradation products from the calcium-channel blocker isradipine.
abstract: Mass Spectrometry has been used to determine the identity of a number of degradation products from the bulk drug form of Isradipine (DynaCirc). Liquid chromatography coupled with mass spectrometry (LC/MS) was used to analyze the degraded samples and tentative identifications were made based upon the known reactivity of the molecule, molecular weight measurements and mass spectral fragmentation patterns. Isradipine was found to be stable to heating, acidic and basic conditions, but susceptible to degradation from exposure to UV light and oxidative processes.
authors: Department of Pharmaceutical and Biomedical Sciences, College of Pharmacy, The University of Georgia, Athens 30602-2352, USA. bartlett@rx.uga.edu
authors: M G
authors: MG
authors: Bartlett
authors: J C
authors: JC
authors: Spell
authors: P S
authors: PS
authors: Mathis
authors: M F
authors: MF
authors: Elgany
authors: B E
authors: BE
authors: El Zeany
authors: M A
authors: MA
authors: Elkawy
authors: J T
authors: JT
authors: Stewart
mesh_terms: D002121:Calcium Channel Blockers / Q000737:chemistry*; D008401:Gas Chromatography-Mass Spectrometry; D006358:Hot Temperature; D006861:Hydrogen Peroxide / Q000737:chemistry*; D017275:Isradipine / Q000737:chemistry* / Q000378:metabolism; D008970:Molecular Weight; D010084:Oxidation-Reduction; D014466:Ultraviolet Rays
chemical_list: D002121:Calcium Channel Blockers; D006861:Hydrogen Peroxide; D017275:Isradipine