CAS 58069-82-2 appears in our catalog under these names: Urea-13C, UREA–13C, Urea-13C 98% 99atom%13C, UREA-13C, RESEARCH GRADE, 99 ATOM% 13C, Urea-13C, 99.1%. Offered by: TRC, GLPBio, Ambeed, Sigma-Aldrich, MedChemExpress. Available pack sizes: 100mg, 1g, 5g, 500mg, 250mg, 100 mg, 50 mg.