CEFMETAZOLE IMPURITY 20 (CHLOROACETONITRILE) CAS:107-14-2 Formula: C2H2ClN C-126027 75.5 Cefmetazole CEFOTAXIME EP IMPURITY A (CEFETAMET) CAS:65052-63-3 Formula: C14H15N5O5S2 C-106003 397.42 Cefotaxime Cefprozil (Mixture of Z and E Isomers) CAS:92665-29-7 Formula: C18H19N3O5S C-127019 389.43 Cefprozil |