CAS 197904-11-3 appears in our catalog under these names: Ethyl (1S,2R)-2-aminocyclopentanecarboxylate, 95%, Ethyl (1S,2R)–2–Aminocyclopentanecarboxylate, Ethyl (1S,2R)-2-Aminocyclopentanecarboxylate, >95%. Offered by: Combi-blocks, GLPBio, Chemat, Fluorochem. Available pack sizes: 250mg, 1g, 100mg, 5g.