CAS 21643-38-9 appears in our catalog under these names: 4-Hexylbenzoic acid, 95%, 4–Hexylbenzoic acid, 4-n-Hexylbenzoic acid, 99% , 4-n-Hexylbenzoic acid, 4-Hexylbenzoic Acid, >98.0%(GC)(T). Offered by: Combi-blocks, GLPBio, Thermo Scientific (Alfa Aesar), Biosynth, TCI. Available pack sizes: 1g, 25g, 5g, 0,025kg, 0,05kg, 0,1kg, 0,5kg, 0,25kg.