Barend Coenraad Petrus Jansen

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B. C. P. Jansen (1 April 1884, Zwolle – 18 October 1962) was a Dutch chemist and biochemist. In the Dutch Indies[chronology citation needed], with his colleague W. F. Donath, he isolated in crystalline form an anti-beriberi factor (known as vitamine B1 or aneurin) from rice polishings and named it thiamine (sulfur-containing amine).[1] It was the first vitamine to be obtained in pure form.


  1. ^ Jansen, B.C.P. and Donath, W.F. (1926) On the isolation of antiberiberi vitamin. Proc. Kon. Ned. Akad. Wet. 29: 1390-1400.