CAS 347841-88-7 appears in our catalog under these names: Nicotinamide-d4, Nicotinamide-d4, >95% (HPLC), Nicotinamide-d4 (Major), >95% (HPLC), Nicotinamide D4, Nicotinamide-2,4,5,6-d4, 98 atom % D, min 98% Chemical Purity. Offered by: Chemat Brand, TRC, Dr. Ehrenstorfer, CDN, GLPBio. Available pack sizes: on request, 2,5mg, 25mg, 100mg, 10mg, 0,5g, 0,1g, 1mg.