CAS 89813-47-8 appears in our catalog under these names: Boc-Hyp-OBzl, 96%, Boc–Hyp–OBzl, N-Boc-trans-4-hydroxy-L-proline benzyl ester, 95% , (2S,4R)-2-Benzyl 1-tert-butyl 4-hydroxypyrrolidine-1,2-dicarboxylate, 98%, 98%, Boc-Hyp-OBzl, 98%. Offered by: Combi-blocks, GLPBio, Thermo Scientific (Alfa Aesar), Chemat, Ambeed. Available pack sizes: 1g, 25g, 5g, 100mg, 250mg.