A method of improving the stability of a quaternary ammonium salt and a method of efficiently preparing the quaternary ammonium salt having improved stability.
一种提高季铵盐稳定性的方法和一种高效制备稳定性提高的季铵盐的方法。
7-Substituted mercaptoacetamido cephamycins
申请人:SmithKline Corporation
公开号:US04059578A1
公开(公告)日:1977-11-22
7.beta.-Substituted mercaptoacetamido-7.alpha.-methoxycephalosporanic acid and derivatives thereof are prepared. These compounds are antibacterial agents with improved properties.
A method of improving the stability of a quaternary ammonium salt and a method of efficiently preparing the quaternary ammonium salt having improved stability.