CFR›Title 21›Chapter I›Part 146›21 CFR Part 146 Subpart A Citation21 CFR Part 146 Subpart AContainsSection § 146.3CorpusDaily eCFRDisplayed edition2026-09-24Last updated2026-09-24 Subpart A—General Provisions Sections § 146.3 § 146.3 Definitions. Authority21 U.S.C. 321, 341, 343, 348, 371, 379e.Source42 FR 14433, Mar. 15, 1977, unless otherwise noted.