CAS 329-56-6 appears in our catalog under these names: (R)-4-(2-Amino-1-hydroxyethyl)benzene-1,2-diol hydrochloride, L-NOREPINEPHRINE HYDROCHLORIDE&, Norepinephrine (hydrochloride) (Standard), 99.58%, Norepinephrine (hydrochloride), 99.95%. Offered by: Chemat, Sigma-Aldrich, MedChemExpress. Available pack sizes: 100mg, 250mg, 500mg, 2.5g, 25mg, 1G, 50 mg, 500 mg.