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Overview
Russell Earl Marker (March 12, 1902 - March 23, 1995) was an eccentric American chemist who invented the octane rating system when he was working at the Ethyl Corporation. Later in his career he went on to found a steroid industry in Mexico when he successfully made synthetic progesterone from a Mexican yam in a process known as Marker degradation, which eventually led to the development of the combined oral contraceptive pill and a cheap, ample supply of cortisone at Syntex.
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