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n.1.(Chem.) A colorless crystalline alkaloid obtained in small quantities from opium.
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However, cryptopine (3), allocryptopine (4), scoulerine (26), mecambridine (27), 2,3,10,11-tetramethoxyberbine (28), 8-ethyl-2,3,10,11-tetramethoxyberbine (29) and 2,3-dimethoxyberbine (36) had some selectivity towards CYP2D6, and these compounds add to the list of known CYP2D6 ligands (Lewis 2004; Wang et al.