2-[(2
R)-2
r-mercapto-4-oxo-3
c-(2-phenoxy-acetylamino)-azetidin-1-yl]-3-methyl-but-2-enoic acid 2,2,2-trichloro-ethyl ester; methoxycarbonyl-mercury(1+) salt 生成
3-methyl-2-((1R)-7-oxo-3-phenoxymethyl-(1rH,5cH)-4-thia-2,6-diaza-bicyclo[3.2.0]hept-2-en-6-yl)-but-2-enoic acid 2,2,2-trichloro-ethyl ester