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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 drinking water and slightly soluble in Liquor. The molecular body weight is 406.37. Its molecular formula is C18H21NO3•H3PO4 • ½ H2O, and it's the following chemical framework.Unresponsive Cough The dosage o