CAS 201469-31-0 appears in our catalog under these names: 3,4-Dehydro-L-proline hydrochloride, 97%, H-3,4-Dehydro-Pro-OH·HCl 98%, (S)-2，5-Dihydro-1H-pyrrole-2-carboxylic acid hydrochloride, 98%, 98%, (S)-2,5-Dihydro-1H-pyrrole-2-carboxylic acid hydrochloride, 98%. Offered by: Combi-blocks, Ambeed, Chemat, Fluorochem. Available pack sizes: 250mg, 5g, 1g, 100mg, 500mg.