US lawFederal (United States)RegulationsTitle 21 CFR — Food and DrugsChapter IPart 20Subpart B20.2521 C.F.R. § 20.25Retroactive application of regulations.Last amended: 2016Year: 2026Length: 15 wordsOfficial source Cite as 21 C.F.R. § 20.25 (2026)The provisions of this part apply to all records in Food and Drug Administration files.Previous21 C.F.R. § 20.24Next21 C.F.R. § 20.26