CAS 13984-57-1 appears in our catalog under these names: Ethyl 4-acetylbutyrate, min. 95 %, 1 kg, Ethyl 4-acetylbutyrate, 95%, 5-Oxohexanoic Acid Ethyl Ester, Ethyl 4–acetylbutyrate, Ethyl 4-acetylbutyrate, 97% . Offered by: Roth, Combi-blocks, TRC, GLPBio, Thermo Scientific (Alfa Aesar). Available pack sizes: 1kg, 1g, 25g, 100g, 5g, 10g, 1000g, 50g.