Methods of selectively removing counterions from compounds are disclosed. Compounds derived from the methods, such as the compound S-[2-[(
1
-Iminoethyl)amino]ethyl]-2-methyl-L-cysteine zwitterion with between zero and up to 2 molar equivalents of hydrochloride are also disclosed.
本发明揭示了有选择性地从化合物中去除对离子的方法。本发明还揭示了从该方法中得到的化合物,例如含有零到2摩尔当量
氯化氢的S-[2-[(1-亚
氨基)乙基]
氨基]乙基-2-甲基-
L-半胱氨酸双电离体化合物。