CAS 5090-29-9 appears in our catalog under these names: 2-Amino-1-(3,4-dihydroxyphenyl)ethan-1-one hydrochloride, 95%, Noradrenaline (Norepinephrine) EP Impurity B HCl, Norepinephrine Impurity 2（Norepinephrine EP Impurity B）, Noradrenalone Hydrochloride, 3，4–dihydroxy–α–aminoacetophenone hydrochloride. Offered by: Combi-blocks, Chemat Brand, Hubei YoungXin, TRC, GLPBio. Available pack sizes: 1g, 250mg, 100mg, on request, 10mg, 25mg, 50mg, 200mg.