CAS 25518-49-4 appears in our catalog under these names: (3R)-3-(2-methylpropanoyloxy)-4-trimethylazaniumylbutanoate, ≥97%, ≥97%, Isobutyryl–L–carnitine, Isobutyryl-L-carnitine, Isobutyryl-L-carnitine, 99.9%. Offered by: Chemat, GLPBio, Sigma-Aldrich, MedChemExpress. Available pack sizes: 10mg, 5mg, 5 mg, 10mM/1mL, 1 mg.