The molecule is a 4-(1-hydroxy-2-{[4-(4-hydroxyphenyl)butan-2-yl]amino}ethyl)phenol in which both stereocentres have R configuration. It is the most active of the four diastereoisomers that make up the animal feed additive ractopamine. It has a role as a beta-adrenergic agonist and an animal growth promotant. It is an enantiomer of an ent-butopamine.
4-[(3R)-3-[[(2R)-2-hydroxy-2-(4-hydroxyphenyl)ethyl]amino]butyl]phenol