CFR›Title 21›Chapter I›Part 131›Subpart A›21 CFR 131.1 Citation21 CFR 131.1CorpusDaily eCFRDisplayed edition2026-10-14Last updated2026-10-14 § 131.1 xxxLink to an amendment published at 91 FR 65055, Oct. 13, 2026. Next 131.3 § 131.3 Definitions.