Heinrich Dreser - Wikipedia

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Heinrich Dreser (1 October 1860 – December 21, 1924 ) was a German chemist responsible for the aspirin and heroin projects at Bayer AG. He was also a key figure in creating the widely used modern drug codeine.

Arthur Eichengrün made the claim, yet unproven, that credit for the discovery of aspirin were stolen from him by Dreser. [1]