Fosfluconazole Impurity E Catalogue F642335 CAS N/A M.W 566.50 M.F C27H25F2N6O4P Specifications FAQs dibenzyl (2-(2,4-difluorophenyl)-1,3-di(1H-1,2,4-triazol-1-yl)propan-2-yl) phosphate