CAS 207121-55-9 appears in our catalog under these names: 2-Amino-9-((2R,4S,5R)-4-hydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-1H-purin-6(9H)-one hydrate(1:x), 98%, 2'–Deoxyguanosine hydrate, 2’-Deoxyguanosine hydrate, 2'-Deoxyguanosine hydrate, 99+%, 2'-DEOXYGUANOSINE HYDRATE, 99%. Offered by: AmBeed, GLPBio, Biosynth, Thermo Scientific (Acros), Sigma-Aldrich. Available pack sizes: 10g, 25g, 100g, 50g, 1g, 5g, 100MG, 250g.