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- W2160238548 abstract "Abstract A high-performance liquid chromatography (HPLC) separation of 4 ergot alkaloids, dihydroergotamine (A), dihydroergocornine (B), dihydroergocryptine (C) and dihydroergocristine (D) as their methanesulfonates is reported. The analysis is performed on two reversed-phase columns (RP8, RP 18) with 5 different mobile phases. An optimum separation is obtained with acetonitrile—water mixtures at about pH 7 under the addition of citrate, acetate or bromide salts, α and β isomers of compound C could only be resolved with an acetonitrile-water mixture containing about 2% diethylamine at about pH 12. An ion-pair mechanism of separation is discussed. The method shows good reproducibility and high selectivity." @default.
- W2160238548 created "2016-06-24" @default.
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- W2160238548 date "1979-12-01" @default.
- W2160238548 modified "2023-09-27" @default.
- W2160238548 title "Separation and determination of four ergot alkaloids, dihydroergotameme-, dihydroergocornine-, dihydroergocryptine- and dihydroergocristine methanesulfonates by high performance liquid chromatography" @default.
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- W2160238548 doi "https://doi.org/10.1016/0378-5173(79)90058-9" @default.
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