Synonyms : 3, 4-Dihydroxynorephedrine, 4-(2-Amino-1-hydroxypropyl)-1, 2-benzenediol, 4-(2-Amino-1-hydroxypropyl)-1, 2-benzenediol Hydrochloride, (R*, R*)-(+, -)-Isomer, 4-(2-Amino-1-hydroxypropyl)-1, 2-benzenediol Hydrochloride, (R*, S*)-(+-)-Isomer, Cobefrine, Corbadrine