CAS 3128-07-2 appears in our catalog under these names: 5-Acetylvaleric acid, 96% , 5-Acetylvaleric acid, 90+%, technical, 6-Oxoheptanoic acid 98%, 6-OXOHEPTANOIC ACID, 90%. Offered by: Thermo Scientific (Alfa Aesar), Thermo Scientific (Acros), Ambeed, Sigma-Aldrich. Available pack sizes: 5g, 10g, 50g, 25g, 100g, 250mg, 1g.