Fentanyl-related substance is defined by structural relation to fentanyl
To amend the Controlled Substances Act with respect to the scheduling of fentanyl-related substances, and for other purposes, section 2, Sec. 2.
Written by .
Fentanyl-related substance is defined by structural relation to fentanyl
The document says “means”Who acts: CongressHow: statuteSec. 2 in the PDF
What the document says
“``(2) For purposes of paragraph (1), except as provided in paragraph (3), the term `fentanyl-related substance' means any substance that is structurally related to fentanyl by 1 or more of the following modifications:”
The definition that carries the rest of the entry. A fentanyl-related substance is any substance structurally related to fentanyl by one or more of the five modifications the paragraph then lists, subject to the exceptions in paragraph (3). Section 6 of this Act gives the same meaning to the term in section 102 of the Controlled Substances Act (21 U.S.C. 802).
What the document actually says
“``(2) For purposes of paragraph (1), except as provided in paragraph (3), the term `fentanyl-related substance' means any substance that is structurally related to fentanyl by 1 or more of the following modifications:”
That sentence, in plain words
Here is what the group means. A drug is in it if it is built like fentanyl. It must differ by one or more of the changes listed next.
What this is about
A drug can be built with small changes to it. The new build may have no name of its own. This rule catches it by naming the changes.
No action is recorded against this proposal. That is not evidence that none has been taken, and nobody has yet read it against the record. See what the tracker does not yet cover.
Halt All Lethal Trafficking of Fentanyl Act, Public Law 119-26, sec. 2, 139 Stat. 410 (2025). https://www.govinfo.gov/content/pkg/PLAW-119publ26/html/PLAW-119publ26.htm
This page
“Fentanyl-related substance is defined by structural relation to fentanyl,” Halt All Lethal Trafficking of Fentanyl Act, section 2, Sec. 2. Read the Mandate, https://readthemandate.org/halt-all-lethal-trafficking-fentanyl-act/proposal/sec02-definition-of-fentanyl-related-substance/ (retrieved October 10, 2026).
Cite the document when the claim is about what the document says. Cite this page when the indexing, the wording or the record of what has happened is what is being relied on.
How to Read This Page
The quotation is the document's own words, exactly as printed, checked against the page
number against the Act itself before publishing. The paragraph underneath is our summary,
not the document's words. So is the plain English version, which is why it sits beside the
quotation rather than replacing it.
