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Leo H. Sternbach Hoffmann-LaRoche Pharmaceutical Company, Nutley The father of Valium, Leo Sternbach discovered the first commercially feasible synthesis of the vitamin biotin, the synthesis of the antispasmodics Quarzan and Librax used to treat peptic ulcers, and the compound 1,4 benzodiazepine, used to make the anti-anxiety drugs \Librium and Valium, the hypnotic drug Dalmane, and the anticonvulsant Klonopin. He holds more than 230 patents.