Doctor Richard Pasternack develops a fermentation-free method for producing ascorbic acid, vitamin C. After building a new plant and initiating a 24-hour-a-day, seven-day-a-week production schedule, Pfizer becomes the world's leading producer of vitamin C.
Encouraged by this success, Pfizer pushes ahead in 1938 with production of vitamin B-2, or riboflavin, and eventually develops a vitamin mix that includes riboflavin, thiamin, niacin, and iron. From vitamin B-12, the company moves on to vitamin A, and by the late 1940s, Pfizer will become the established leader in the manufacture of vitamins.