CAS 49637-21-0 appears in our catalog under these names: 4-(Pyrrolidin-1-yl)butanoic acid hydrochloride, 95%, 1-Pyrrolidinebutyric Acid Hydrochloride, Pyrrolidin-1-ylbutanoic acid hydrochloride, Pyrrolidin-1-ylbutanoic acid HCl 98+%, 4-(Pyrrolidin-1-yl)butanoic acid hydrochloride, 98+%, 98+%. Offered by: Combi-blocks, TRC, Biosynth, Ambeed, Chemat. Available pack sizes: 5g, 1g, 250mg, 10g, 25g, 0,5g, 250 mg, 5 g.