TCI C0978 Barium 2-Cyanoethylphosphate Hydrate (CAS 207121-42-4) is a solid phosphorylating reagent available in 5 g and 25 g packs. It delivers a phosphate unit already carrying a 2-cyanoethyl protecting group, which can later be removed under mild basic conditions. The reagent is commonly applied to nucleosides, sugars, and simple alcohols, typically with a coupling activator, and the barium counterion is exchanged or precipitated as required. Because barium salts are toxic, weigh the material with gloves and dust protection, keep it dry and tightly closed, and dispose of residues through heavy-metal waste channels.
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