US lawFederal (United States)RegulationsTitle 21 CFR — Food and DrugsChapter I — FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICESPart 522 — IMPLANTATION OR INJECTABLE DOSAGE FORM NEW ANIMAL DRUGS522.9021 C.F.R. § 522.90Ampicillin injectable dosage forms.Last amended: 2016Year: 2026Length: 6 wordsOfficial source Cite as 21 C.F.R. § 522.90 (2026)[79 FR 16183, Mar. 25, 2014]Previous21 C.F.R. § 522.88Next21 C.F.R. § 522.90a