CAS 1189954-79-7 appears in our catalog under these names: Nicotinic Acid-13C6, >95% (HPLC), Nicotinic Acid-13C6 (100 μg/ml in methanol), Niacin–13C6, NICOTINIC ACID-13C6, 99 ATOM % 13C, Niacin-13C6, 98.0%, 98.0%. Offered by: TRC, GLPBio, Sigma-Aldrich, Chemat, MedChemExpress. Available pack sizes: 1mg, 1x1ml, 2x1ml, 5x1ml, 10MG, 1 mg.