Max Tishler
Max Tishler ( October 30 , 1906 – March 18 , 1989 ) was president of Merck Sharp and Dohme Research Laboratories where he led the research teams that synthesized ascorbic acid , riboflavin , cortisone , pyridoxine , pantothenic acid , nicotinamide , methionine , threonine , and tryptophan . 
<triplet> Max Tishler <subj> October 30, 1906 <obj> date of birth <subj> March 18, 1989 <obj> date of death