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The phosphate salt of codeine occurs as white, needle-shaped crystals or white crystalline powder. Codeine phosphate is freely soluble in water and a bit soluble in Alcoholic beverages. The molecular weight is 406.37. Its molecular method is C18H21NO3•H3PO4 • ½ H2O, and it's the next chemical construction.Promethazine is undoubtedly an H1 rece