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Isolation and Characterization of Photodegradation Impurity in Budesonide Drug Product Using LC-MS and NMR Spectroscopy

机译:利用LC-MS和NMR光谱分离和表征Phateonide药物产品中的光降解杂质

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Budesonide is a corticosteroid used for the treatment of asthma via various matrices and inhalation mechanisms. An unknown peak of Budesonide aqueous formulation has been investigated during stability study wherein the impurity level observed around 0.1% well below the threshold 0.5%. The approach to identify anonymous species was adopted as first to generate the impurity in sample, isolate, enrich and was subjected to LC-MS/MS and NMR for spectral studies. Based on the spectral data the anonymous species were identified as a “Lumibudesonide’’ ((5aR,5bS,5cS,6S,7aS,7bS,10aR,11aS,11bS)-6-hydroxy-7b-(2-hydroxyacetyl)-5b,7a-dimethyl-9-propyl 1,5a,5b,5c,6,7,7a,7b,10a,11,11a,11b dodecahydrocyclopenta[2'',3'']cyclopropa [1'',2'':3', 4']benzo [1',2':4,5]indeno [1,2-d][1,3]dioxol-5(2H)-one), which is observed in photolysis of Budesonide.
机译:Budesonide是一种用于通过各种基质和吸入机制治疗哮喘的皮质类固醇。在稳定性研究期间已经研究了未知的水果苷含水制剂的峰,其中杂质水平观察到差低于阈值0.5%的0.1%。首先采用鉴定匿名物种的方法,以产生样品中的杂质,分离,富集并进行LC-MS / MS和NMR进行光谱研究。基于光谱数据,匿名物种被鉴定为“Lumibudesonide”((5AR,5Bs,5℃,6s,7as,7bs,10ar,11as,11bs)-6-羟基-7b-(2-羟基乙酰基)-5b ,7a-二甲基-9-丙基1,5a,5b,5c,6,7,7a,7b,10a,11,11a,11b十二烷过度环戊类[2',3'] cyclopropa [1',2'' :3',4']苯并[1',2':4,5] Indeno [1,2-D] [1,3]二氧氧-5(2H) - 在皮肤解水溶液中观察到。

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