CAS 16899-81-3 appears in our catalog under these names: 3',4'-Dihydroxy-2-(isopropylamino)acetophenone hydrochloride, 1-(3,4-Dihydroxyphenyl)-2-[(1-methylethyl)amino]ethanone hydrochloride, 95%, Isoproterenone HCl, Isoprenaline HCl EP Impurity A HCl, Norepinephrine Impurity 10. Offered by: Biosynth, Combi-blocks, Chemat Brand, Hubei YoungXin, TRC. Available pack sizes: 1g, 5g, 250mg, on request, 10mg, 25mg, 50mg, 100mg.