CAS 72180-27-9 appears in our catalog under these names: Cbz-4,4-DiF-Pro-OH 95%, (S)-1-((Benzyloxy)carbonyl)-4,4-difluoropyrrolidine-2-carboxylic acid, 95%, 95%, (S)-1-((Benzyloxy)carbonyl)-4,4-difluoropyrrolidine-2-carboxylic acid, 98%. Offered by: Ambeed, Chemat, Fluorochem. Available pack sizes: 50mg, 100mg, 250mg, 1g.