4-吡啶甲酰胺 、
(6R)-3-acetoxymethyl-8-oxo-7t-((Ξ)-2-phenyl-2-sulfoamino-acetylamino)-(6rH)-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid; disodium salt 在
potassium iodide 作用下,
生成 4-carbamoyl-1-[(6
R)-2-carboxy-8-oxo-7
t-((Ξ)-2-phenyl-2-sulfoamino-acetylamino)-(6
rH)-5-thia-1-aza-bicyclo[4.2.0]oct-2-en-3-ylmethyl]-pyridinium betaine