Ntrimethyl chitosan chloride,a partially quaternised derivative of chitosan,which is soluble in neutral and basic environment,can be used as an absorption enhancer of oral peptide drugs.

• 氯化N-三甲基壳聚糖是壳聚糖的部分季铵化衍生物,能溶于中性及碱性环境中,可作为肽类药物的口服吸收促进剂。