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Chemical Name:(S)-tert-butyl 6-(5-(7-broMo-9,9-difluoro-9H-fluoren-2-yl)-1H-iMidazol-2-yl)-5-azaspiro[2.4]heptanes-5-carboxylate 
Cas No.:1441670-89-8 
Molecular Formula:C27H26BrF2N3O2 
Molecular Weight:542.42 
Usage:Intermediate of Ledipasvir 
结构式: 



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