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- W4362507652 abstract "Abstract A rapid and reliable method for the simultaneous determination of the percentage of narcotine, thebaine and papaverine in opium by an infrared method has been developed. Examination of the infra-red spectrum of the carbon tetrachloride solution of the dried chloroform residue from an acetic acid-water opium solution revealed a quantitative relationship between the absorbances at 1767, 1602 and 1160 cm.−1 and the concentration of narcotine, thebaine and papaverine." @default.
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- W4362507652 date "1959-09-01" @default.
- W4362507652 modified "2023-09-27" @default.
- W4362507652 title "The Determination of the Origin of Opium, Part 11. Simultaneous Assayo of Narcotinte Thebainae and Papaverine in Opium by Infra-Red Spectroscopy" @default.
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- W4362507652 doi "https://doi.org/10.1111/j.2042-7158.1959.tb12549.x" @default.
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