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Oripavine is an alkaloid found in poppy straw (Class A) of the opium poppy. It can easily be converted into thebaine (controlled under the Misuse of Drugs Act 1971 in Class A and under the Misuse of Drugs Regulations in Schedule 2) and used in the production of semi-synthetic opiates such as hydrocodone and oxycodone. In recent years quantities of concentrate of poppy straw containing oripavine have been manufactured for commercial use