;
系数;It is ascertained that the PABA may be N-dimethylated using dimethyl sulfate as a methylation agent.
确定以硫
二
酯为N——
化剂,对对氨
PABA进行N——二化.
（Para-Aminobenzoic Acid）It is ascertained that the PABA may be N-dimethylated using dimethyl sulfate as a methylation agent.
确定以硫二酯为N——化剂,对对氨PABA进行N——二化.
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