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[Influence of mobile phase composition on chiral separation of albendazole sulfoxide racemates]
Zongde Zhai1, Hong Zhang, Huijuan Dun
1Lanzhou Institute of Chemical Physics, The Chinese Academy of Sciences, Lanzhou 730000, China. zzdlz@yahoo.com.cn
Abstract:
A chiral stationary phase (CSP) was prepared by coating amylose-tris(3,5-dimethylphenyl carbamate) (ADMPC) onto aminopropylated spherical silica gel. Albendazole sulfoxide (ABZSO) was directly resolved on the ADMPC-CSP by normal-phase high performance liquid chromatography (HPLC) using a series of binary and ternary mobile phases. The results indicated that the retention and stereoselectivity of ABZSO on ADMPC-CSP were significantly influenced by the kinds and the contents of the alcohols in mobile phases. The use of methanol and/or ethanol as alcoholic modifier achieved better separation of ABZSO. Effective and efficient chiral resolution was obtained by using ternary mobile phases: hexane/2-propanol/methanol or hexane/ethanol/methanol.
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