CAS 59935-29-4 appears in our catalog under these names: L–Valine–15N, L-VALINE-15N, 98+ ATOM % 15N, L-Valine-15N, 99%, 99%, L-Valine-15N, 99.0%. Offered by: GLPBio, Sigma-Aldrich, Chemat, MedChemExpress. Available pack sizes: 100mg, 25mg, 50mg, 500MG, 25 mg, 100 mg, 50 mg.