D Disodium Guanylate CAS: 5550-12-9 EC number: 226-914-1 Chemical formula: C₁₀H₁₂N₅Na₂O₈P I+G Disodium Inosinate CAS: 4691-65-0 EC number: 225-146-4 Chemical formula: C₁₀H₁₁N₄Na₂O₈P I+G