1-N-Methyl-5-thiotetrazole is a kind of oral cephalosporin antibiotic. This chemical can be used for cefoperazone, ceftazidime and Bangladesh more hydrochloride, cefmetazole, cefotetan, drugs such cefpiramide intermediate. There are some basic informations about this crude drug: (1)CAS No.: ; (2)Other Names: MMTZ; (3)MF: C₂H₄N₄S; (4)EINECS No.: 236-132-2; (5)Appearance: white powder.