GroundRules
21 CFR 520.2520a: a Trichlorfon and atropine.
Where this section sits in the code
- Title 21—Food and Drugs
- CHAPTER I—FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES
- SUBCHAPTER E—ANIMAL DRUGS, FEEDS, AND RELATED PRODUCTS
- PART 520—ORAL DOSAGE FORM NEW ANIMAL DRUGS
(a) Specifications. (1) For trichlorfon: O,O-Dimethyl 2,2,2-trichloro-1-hydroxyethyl phosphonate.
(2) For atropine: Atropine N.F.
(b) Sponsor. See No. 054771 in § 510.600(c) of this chapter.
(c) Conditions of use in mice—(1) Amount. Administer 1.67 grams of trichlorfon and 7.7 milligrams of atropine per liter continuously for 7 to 14 days as the sole source of drinking water.
(2) Indications for use. For the treatment of Syphacia obvelata (pinworm) in laboratory mice.
(3) Limitations. Federal law restricts this drug to use by or on the order of a licensed veterinarian.
Collected 2026-08-27T02:24:47Z. Source file · JSON