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- W2043315211 abstract "DPC 961 and DPC 083 are investigational non-nucleoside reversed transcriptase inhibitors (NNRTI) being evaluated for the treatment of HIV infections (Corbett et al., Antimicrob Agents Chemother 1999;43:2893–2897). Both compounds are chiral and are synthesized as single enantiomers by an asymmetric synthetic pathway (Magnus et al., Tetrahedron Lett 2000;41:3015–3019). A chiral method was developed to control the enantiomeric purity of the drug substance and to monitor for any chiral inversion in the drug substance and in the tablet formulation during stability studies. Three columns were evaluated: Chiralpak AD, Chirobiotic V, and Whelk-O. All three columns have broad applicability and can resolve enantiomers of compounds of very diverse molecular structure and polarity. The three columns were evaluated with various mobile phase compositions for their ability to resolve the racemic mixtures of DPC 083, DPC 961, and their respective enantiomers and for their selectivity toward the synthetic impurities of the two drug substances. Nonaqueous mobile phases were selected because the two drugs are poorly water soluble. The separation between the unwanted enantiomer of DPC 083 and DPC 961, which is a major impurity of DPC 083, in particular, was closely monitored. The final method was fully validated and is used for the routine testing of the drug substance and tablets. Chirality 13:193–198, 2001. © 2001 Wiley-Liss, Inc." @default.
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- W2043315211 date "2001-01-01" @default.
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- W2043315211 title "Column selection and method development for the determination of the enantiomeric purity of investigational non-nucleoside reverse transcriptase inhibitors" @default.
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- W2043315211 doi "https://doi.org/10.1002/chir.1019" @default.
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