were observed to be 0.49–17.50%. Enantiomeric impurities of several commercially available L‐amino acid methyl esters were found to be 0.03–0.58%, whereas chemical impurities as the corresponding racemic acids present in the same analytes were found to be 0.13–13.62%. This developed analytical method will be useful for the determination of chemical and enantiomeric purity of α‐amino acids and/or esters
在衍生自
直链淀粉衍
生物的三个共价键合型手性固定相(C
SP)上进行
液相色谱对映体分离,同时测定
α-氨基酸及其甲酯作为N-
芴基甲氧基羰基(FMOC)衍
生物的
化学和对映体纯度。作为N-FMOC衍
生物的
α-氨基酸酯的对映体分离要好于相应的酸,尤其是对于C
SP 1和2。对于一些市售消旋
氨基酸甲酯中存在的
化学杂质,如相应的消旋酸,观察到是0.49–17.50%。发现几种可商购的L-
氨基酸甲酯的对映体杂质为0.03-0.58%,而相同分析物中存在的相应消旋酸的
化学杂质为0.13-13.62%。