BUTYRIC ACID-1-13C CAS:... Trade Name: ALDRICH Formula: 13CC3H8O2 99 atom % 13C 99 atom % 13C 488372 BUTYRIC ACID-2-13C CAS:... Trade Name: ALDRICH Formula: 13CC3H8O2 99 atom % 13C 99 atom % 13C 588547 | ||||||||||||||||