CAS 175012-15-4 appears in our catalog under these names: Boc-Val-Hyp-OH 98%, 1-(BOC-L-VALYL)-(4R)-4-HYDROXY-L-PROLINE, 98%, 98%, (2S,4R)-1-((tert-Butoxycarbonyl)-L-valyl)-4-hydroxypyrrolidine-2-carboxylic acid, 98%. Offered by: Ambeed, Chemat, Fluorochem. Available pack sizes: 100mg, 250mg, 1g, 5g.