Posaconazole Impurity 10 Catalogue B502560 CAS 1370190-85-4 M.W 277.27 M.F C14H13F2N3O Specifications FAQs (R)-1-((2-(2,4-difluorophenyl)-4-methylenetetrahydrofuran-2-yl) methyl)-1H-1,2,4-triazole