21736-83-4
盐酸大观霉素
→
1695-77-8
大观霉素
56733-82-5
N,N'-Bis-(carbobenzyloxy)dihydrospectinomycin
96699-66-0
96680-98-7
96680-99-8
96681-00-4
56733-83-6
N,N-bis(benzyloxycarbonyl)-spectinomycin