| 摘要 |
<p>A 7 beta -ureidoacetamido-7 alpha -methoxy-3-(1-carbamoylmethyl-1H-tetrazol-5-yl)thiomethyl-1-dethia-1-o xa-3-cephem-4-carboxylic acid derivative represented by the following formula: <IMAGE> wherein Ar is phenyl, hydroxyphenyl, or thienyl and R is hydrogen, a light metal, or a carboxy-protecting group.</p> |
