CAS 201351-32-8 appears in our catalog under these names: Ac-dab(boc)-oh, 98%, (S)-2-Acetamido-4-((tert-butoxycarbonyl)amino)butanoic acid, 97%, Ac-dab(boc)-oh, 97%, 97%, Na-Ac-Ng-Boc-L-2,4-diaminobutyric acid, 97%. Offered by: Combi-blocks, AmBeed, Chemat, Fluorochem. Available pack sizes: 100mg, 1g, 250mg, 5g.