21 C.F.R. § 520.2200a Sulfachlorpyridazine bolus.
Title 21 - Food and Drugs
(a) Chemical name. N′-6-(Chloro-3-pyridazinyl) sulfanilamide. (b) Specifications. Melting point range: 190 °C to 191 °C. (c) Sponsor. See No. 053501 in §510.600(c) of this chapter. (d) Related tolerances. See §556.630 of this chapter. (e) Conditions of use. It is used in calves as follows: (1) Amount. 30 to 45 milligrams per pound body weight per day. (2) Indications for use. Treatment of diarrhea caused or complicated by E. coli (colibacillosis). (3) Limitations. Administer in a bolus containing 2 grams of sulfachlorpyridazine for 1 to 5 days in divided doses twice daily; treated calves must not be slaughtered for food during treatment or for 7 days after the last treatment. A withdrawal period has not been established for this product in preruminating calves. Do not use in calves to be processed for veal. [40 FR 13838, Mar. 27, 1975, as amended at 50 FR 41489, Oct. 11, 1985; 70 FR 16934, Apr. 4, 2005]
Title 21: Food and Drugs
PART 520—ORAL DOSAGE FORM NEW ANIMAL DRUGS
§ 520.2200a Sulfachlorpyridazine bolus.
