The naphthalene derivatives 1-benzyl-3-methylnaphthalene and 1,3-dimethyl-2-phenylnaphthalene are chemical modifications of naphthalene, which used to be the main ingredient of mothballs.
Nothing is known about the effect of these substances, as their consumption has never been studied.
Nothing is known about the risks associated with the consumption of naphthalene derivatives, but naphthalene as a basic substance exhibits carcinogenic properties; the extent to which these properties are transferable to the naphthalene derivatives cannot be assessed. In addition, the substances may exhibit acute or long-term toxic effects.
Each synthetic impurity poses an unknown health risk: the hazardous properties have never been scientifically studied and are therefore difficult to assess. The more different synthetic impurities are contained in a sample, the greater the probability that an impurity with a high adverse health effect is among them. Even a small amount of such an impurity can be harmful. In addition, synthetic impurities are an indication of improper manufacturing/purification. It is also important to add that regular use of amphetamine with synthetic impurities poses a higher health risk than one-time use.