CAS 504-33-6 appears in our catalog under these names: DL-Homocysteic acid, DL-Homocysteic Acid, >97.0%(T), H-DL-HoCysteic acid 96%, 2-amino-4-sulfobutanoic acid, 97%, 97%, 2-amino-4-sulfobutanoic acid, 97.0%. Offered by: Biosynth, TCI, Ambeed, Chemat, MedChemExpress. Available pack sizes: 10g, 1g, 5g, 25g, 250mg, 1 g.