Solely the straight chain isomer of the above, normal butyric acid or n-butyric acid, CH3(CH2)2COOH, a short chain fatty acid; its glyceride is one of the principle components of the flavour of butter
Either of two colorless isomeric acids, CCOOH, occurring in animal milk fats and used in disinfectants, emulsifying agents, and pharmaceuticals. Also called butanoic acid