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Codeine
C18H21NO3·H2O 317.38
 Morphinan-6-ol, 7,8-didehydro-4,5-epoxy-3-methoxy-17-methyl-, monohydrate, (5α,6α)-.
 7,8-Didehydro-4,5α-epoxy-3-methoxy-17-methylmorphinan-6α-ol monohydrate
 [6059-47-8] Anhydrous 299.37
 [76-57-3]

» Codeine, dried at 80° for 4 hours, contains not less than 98.5 percent and not more than 100.5 percent of C18H21NO3.

USP REFERENCE STANDARDS FOR PURCHASE

USP Codeine Sulfate RS
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