# 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 Vagueness doctrine.

## Definition

21 U.S.C. § 802(32)
* (A) Except as provided in subparagraph (C), the term controlled substance analogue means a substance -
** (i) the chemical structure of which is substantially similar to the chemical structure of a controlled substance in schedule I or II;
** (ii) which has a stimulant, depressant, or hallucinogenic effect on the central nervous system that is substantially similar to or greater than the stimulant, depressant, or hallucinogenic effect on the central nervous system of a controlled substance in schedule I or II; or
** (iii) with respect to a particular person, which such person represents or intends to have a stimulant, depressant, or hallucinogenic effect on the central nervous system that is substantially similar to or greater than the stimulant, depressant, or hallucinogenic effect on the central nervous system of a controlled substance in schedule I or II.
* (B) The designation of gamma butyrolactone or any other chemical as a listed chemical pursuant to paragraph (34) or (35) does not preclude a finding pursuant to subparagraph (A) of this paragraph that the chemical is a controlled substance analogue.
* (C) Such term does not include -
** (i) a controlled substance;
** (ii) any substance for which there is an approved new drug application;
** (iii) with respect to a particular person any substance, if an exemption is in effect for investigational use, for that person, under section 355 of this title to the extent conduct with respect to such substance is pursuant to such exemption; or
** (iv) any substance to the extent not intended for human consumption before such an exemption takes effect with respect to that substance.

## Case law
### United States v. Forbes

United States v. Forbes, 806 F. Supp. 232 (D. Colo. 1992), a Colorado district court case, considered the question of whether the drug alphaethyltryptamine (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."
The common law principle that the people should have the right to know what the law is, means that the wording of laws should be sufficiently clear and precise that it is possible to give a definitive answer as to whether a particular course of action is legal or illegal. However, despite this ruling the Federal Analogue Act was not revised, and instead AET was specifically scheduled to avoid any future discrepancies.
As a district court decision, this case is not binding precedent.

### United States v. Washam

United States v. Washam (2002) 312 F.3d 926, 930 was an appellate decision for the eighth judicial circuit in which it was considered whether the drug 1,4-Butanediol (1,4-B) was a controlled substance analogue in the United States. The controlled drug which it was alleged 1,4-B was substantially similar to was gamma-hydroxybutyrate (GHB).
1,4-B
GHB
In this case the court ruled that 1,4-B was substantially similar to GHB, on the grounds that (i) "1,4-Butanediol and GHB are both linear compounds containing four carbons and that there is only one difference between the substances on one side of their molecules", and, more importantly, (ii) that 1,4-B is metabolized into GHB by the body and so produces substantially similar physiological effects.
It was raised in defense that 1,4-B and GHB contain different functional groups. but these were not held to be grounds to consider 1,4-B not substantially similar to GHB.
It was also raised in the case of Washam that the Federal Analogue Act was unconstitutionally vague, but in this case the court rejected this argument on the grounds that the defendant's actions in concealing her activities and lying to DEA agents showed that she knew her actions were illegal, and furthermore that "…a person of common intelligence has sufficient notice under the statute that 1,4-Butanediol is a controlled substance analogue." The court in Washam construed the Analogue Act to require parts A(i) and either A(ii) or A(iii), and concluded the Act was constitutionally permissible upon this construction.
As a result of Washam, the Federal Analogue Act has been upheld (at least for the states and territories comprising the eighth judicial circuit) and can be considered valid at the present time.
However, a jury in Federal District Court in Chicago in a different case found 1,4-butanediol not to be an analog of GHB under federal law, and the Seventh Circuit Court of Appeals upheld that verdict and so 1,4-butanediol is currently not a controlled substance analogue.