CFR›Title 21›Chapter I›Part 300›Subpart C ContainsSection 300.100CorpusDaily eCFRDisplayed edition2026-05-13Last updated2026-05-13 Subpart C—Substances Generally Prohibited From Drugs Sections 300.100 § 300.100 Chlorofluorocarbon propellants. Previous B Subpart B—Combination Drugs Next D Subpart D—Annual Summary Reporting Requirements.