CAS 117833-18-8 appears in our catalog under these names: Ac-Asp(OtBu)-OH, 98%, Ac–Asp(OtBu)–OH, AC-Asp(OtBU)-OH, 99.48%, (S)-2-Acetamido-4-(tert-butoxy)-4-oxobutanoic acid, 97%, (S)-2-Acetamido-4-(tert-butoxy)-4-oxobutanoic acid, 98%. Offered by: Combi-blocks, GLPBio, MedChemExpress, Ambeed, Chemat. Available pack sizes: 1g, 10g, 5g, 25g, 100g, 5 g, 100 g, 25 g.