CAS 190897-47-3 appears in our catalog under these names: Boc-(S)-3-Amino-2-methylpropanoicacid 95%, Boc-S-AMPA-OH, (S)-3-((tert-Butoxycarbonyl)amino)-2-methylpropanoic acid, 95%, 95%, (S)-3-((tert-Butoxycarbonyl)amino)-2-methylpropanoic acid, 95%. Offered by: Ambeed, Iris Biotech, Chemat, Fluorochem. Available pack sizes: 100mg, 250mg, 1g, 5g, 10g, 15g, 25g.