Federal Analogue Act

The Federal Analogue Act, 21 U.S.C. § 813, is a section of the United States Controlled Substances Act passed in 1986 which allows any chemical "substantially similar" to a controlled substance listed in Schedule I or II to be treated as if it were listed in Schedule I, but only if intended for human consumption. These similar substances are often called designer drugs. The law's broad reach has been used to successfully prosecute possession of chemicals openly sold as dietary supplements and naturally contained in foods (e.g., the possession of phenethylamine, a compound found in chocolate, has been successfully prosecuted based on its "substantial similarity" to the controlled substance methamphetamine). The law's constitutionality has been questioned by now Supreme Court Justice Neil Gorsuch on the basis of the vagueness doctrine.

21 U.S.C. § 802(32)

United States v. Forbes, 806 F. Supp. 232 (D. Colo. 1992), a Colorado district court case, considered the question of whether the drug alpha-ethyltryptamine (AET) was a controlled substance analogue in the United States. The controlled drugs to which it was alleged that AET was substantially similar were the tryptamine analogues dimethyltryptamine (DMT) and diethyltryptamine (DET).

AET

DMT

DET

In this case, the court ruled that AET was not substantially similar to DMT or DET, on the grounds that (i) AET is a primary amine while DMT and DET are tertiary amines, (ii) AET cannot be synthesized from either DMT or DET, and (iii) the hallucinogenic or stimulant effects of AET are not substantially similar to the effects of DMT or DET. Furthermore, the court ruled that the definition of controlled substance analogue given in the Federal Analogue Act was unconstitutionally vague, in that

"Because the definition of 'analogue' as applied here provides neither fair warning nor effective safeguards against arbitrary enforcement, it is void for vagueness."