CAS 155892-27-6 appears in our catalog under these names: Fmoc-L-Tyr(tBu)-OSu, 97%, Fmoc–l–tyr(tbu)–osu, Fmoc-Tyr(tBu)-Osu 95%, Fmoc-L-Tyr(tBu)-OSu, 95%, 95%. Offered by: Combi-blocks, GLPBio, Ambeed, Chemat. Available pack sizes: 1g, 25g, 5g, 250mg, 10g.