CAS 557-25-5 appears in our catalog under these names: Glycerol 1–Monobutyrate, 1-Monobutyrin, 95%, Glycerol 1-Monobutyrate (Technical Grade), 1-Monotetranoin, Butanoic acid, 2,3-dihydroxypropyl ester, 90%, 90%. Offered by: GLPBio, Combi-blocks, TRC, Biosynth, Chemat. Available pack sizes: 25mg, 5g, 1g, 250mg, 100mg, 500mg, 0,5g.