CAS 149989-59-3 appears in our catalog under these names: DMT-dc(tac) phosphoramidite, DMT-dC(tac) Amidite 18g, Single, DMT-dc(tac) amidite 1g, ab, 12 pack, DMT-dc(tac) amidite 2g, ab, 12 pack, DMT-dc(tac) amidite 5g, 6 pack. Offered by: Biosynth, Sigma-Aldrich. Available pack sizes: 5g, 10g, 18G, 12X1G, 12X2G, 6X5G.