938-79-4

clear colorless liquid

(R)-(-)-2-Phenylbutyric Acid, is the metabolite of Butamirate (B690025), which is a novel antitussive drug.

Purify the acids by distillation at atmospheric pressure using an efficient column. The acid chlorides have b 106-107o/20mm, []D () and (+) 108o (c 2, *C6H6). [Levene et al. J Biol Chem 100 589 1933, Gold & Aubert Helv Chim Acta 41 1512 1958, ORD in heptane: Rothen & Levene J Chem Phys 7 975 1939, Beilstein 9 III 2461.]