CAS 3697-38-9 appears in our catalog under these names: Homarine hydrochloride, 2-Carboxy-1-methylpyridin-1-ium chloride 98%, 2-Carboxy-1-methylpyridin-1-ium chloride, 98%, 98%, 2-Carboxy-1-methylpyridin-1-ium chloride, 98%. Offered by: Biosynth, Ambeed, Chemat, Fluorochem. Available pack sizes: 25mg, 50mg, 100mg, 250mg, 1g, 5g.