Abstract
Abstract Narcotine reacts with potassium iodate and antimony potassium tartarate to give a yellowish orange colour having maximum absorbance at 430–440 nm. The reaction is specific for narcotine, having 1 ug/10 ml as visual limit of identification and provides a basis for a new spectropho-tometric determination of pure narcotine and in the presence of other drugs. The maximum tolerable limits of these are reported.
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