Colorado Statutes

§ 18-18-203 — Schedule I

Colorado § 18-18-203
JurisdictionColorado
Title 18Criminal
Art.Uniform Controlled Substances

This text of Colorado § 18-18-203 (Schedule I) is published on Counsel Stack Legal Research, covering Colorado primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Colo. Rev. Stat. § 18-18-203 (2026).

Text

(1)A substance shall be added to schedule I by the general assembly when:
(a)The substance has high potential for abuse;
(b)The substance has no currently accepted medical use in treatment in the United States; and
(c)The substance lacks accepted safety for use under medical supervision.
(2)Unless specifically excepted by Colorado or federal law or Colorado or federal regulation or more specifically included in another schedule, the following controlled substances are listed in schedule I:
(a)Any of the following synthetic opiates, including any isomers, esters, ethers, salts, and salts of isomers, esters, and ethers of them that are theoretically possible within the specific chemical designation:
(I)Acetyl-alpha-methylfentanyl (N-[1-(1-methyl-2-phenethyl)-4-piperidinyl

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Legislative History

Source: L. 92: Entire article R&RE, p. 332, � 1, effective July 1. L. 94: (2)(c)(II.5) added and (2)(e) amended, pp. 1721, 1722, �� 20, 21, effective July 1. L. 96: (2)(e)(I), (2)(e)(III), and (2)(e)(V) amended, p. 1843, � 8, effective July 1. L. 2001: (2)(f) and (2)(g) added, pp. 858, 860, �� 3, 9, effective July 1. L. 2005: (2)(c)(IV.5) and (2)(c)(VIII.5) added, p. 1501, � 7, effective July 1, 2006. L. 2009: (2)(h) added, (HB 09-1157), ch. 342, p. 1795, � 1, effective July 1. L. 2012: (2)(e)(I) repealed, (HB 12-1310), ch. 268, p. 1405, � 30, effective June 7. L. 2022: (2)(c)(VII) amended, (HB 22-1344), ch. 461, p. 3273, � 2, effective August 10. L. 2025: (2)(c)(XXI) amended, (HB 25-1063), ch. 46, p. 212, � 2, effective August 6.

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Bluebook (online)
Colorado § 18-18-203, Counsel Stack Legal Research, https://law.counselstack.com/statute/co/18/18-18-203.