(6R)-8-oxo-7t-((R)-2-phenyl-2-sulfo-acetylamino)-3-pyridin-4-ylsulfanylmethyl-(6rH)-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid 、
碘甲烷 生成 4-[(6
R)-2-carboxy-8-oxo-7
t-((
R)-2-phenyl-2-sulfo-acetylamino)-(6
rH)-5-thia-1-aza-bicyclo[4.2.0]oct-2-en-3-ylmethylsulfanyl]-1-methyl-pyridinium betaine