CFR›Title 21›Chapter I›Part 343›Subpart C ContainsSections 343.50–343.80CorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 Subpart C—Labeling Sections 343.50-343.60 §§ 343.50-343.60 [Reserved] 343.80 § 343.80 Professional labeling. Previous B Subpart B—Active Ingredients Next D Subpart D—Testing Procedures