CAS 14254-45-6 appears in our catalog under these names: 6-(6-((tert-Butoxycarbonyl)amino)hexanamido)hexanoic acid, 97%, 6-(6-{[(tert-butoxy)carbonyl]amino}hexanamido)hexanoic acid, 97%, 97%, Boc-Aca-Aca-OH. Offered by: Fluorochem, Chemat, Iris Biotech. Available pack sizes: 100mg, 250mg, 1g, 5g, 500mg, 25g.