Posaconazole Impurity 2 Catalogue B502552 CAS 2243786-00-5 M.W 513.64 M.F C30H35N5O3 Specifications FAQs 1-((2R,3S)-2-(benzyloxy)pentan-3-yl)-4-(4-(4-(4-hydroxyphenyl) piperazin-1-yl)phenyl)-1H-1,2,4-triazol-5(4H)-one