It is apparently the case which the conversion charge from levamisole to aminorex might be rather low121,122. Even now, Karch et al Illicitly, levamisole is being used being an adulterant in street samples of cocaine. This practice is more and more claimed with the onset of the new millennium onwards https://4-methylaminorex92570.mybuzzblog.com/6018602/4-methylaminorex-no-further-a-mystery