sodium;[5-[[(6R,7R)-2-carboxy-7-[(2-formyloxy-2-phenylacetyl)amino]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-en-3-yl]methylsulfanyl]tetrazol-1-yl]methanesulfonate 生成
disodium;(6R,7R)-7-[(2-hydroxy-2-phenylacetyl)amino]-8-oxo-3-[[1-(sulfonatomethyl)tetrazol-5-yl]sulfanylmethyl]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate