采用相转移催化法以四丁基氯化铵为催化剂合成了端基含磺胺嘧啶的聚乳酸，将肿瘤导向基团引入了可生物降解药物载体。
Sulfadiazine-polylactide , a tumor targeting drug carrier , was successfully synthesized by the phase transfer catalysis ( PTC ) with tetrabutyl ammonium chloride hydroxide as catalyst .
四丁基氯化铵