CAS 3715-29-5 appears in our catalog under these names: alpha-Keto Isovaleric Acid Sodium Salt, >95% (HPLC), 3–methyl–2–oxobutyrate, Sodium 3-methyl-2-oxobutanoate, 3-Methyl-2-oxobutanoic acid, sodium salt, 98+%, Sodium 3-methyl-2-oxobutanoate 95%. Offered by: TRC, GLPBio, Biosynth, Thermo Scientific (Acros), Ambeed. Available pack sizes: 100mg, 1g, 5g, 10mg, 50mg, 0,025kg, 0,01kg, 25g.