John C. Sheehan, 76, the scientist who developed synthetic...

Deaths elsewhere

March 24, 1992

John C. Sheehan, 76, the scientist who developed synthetic penicillin, died Saturday in Key Biscayne, Fla. after a long battle with cancer. He held more than 20 patents, but the most important was ampicillin, now a commonly used semi-synthetic penicillin.

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