21 CFR 556.495 - Oxfendazole.

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There are 3 Updates appearing in the Federal Register for 21 CFR 556. View below or at eCFR (GPOAccess)
§ 556.495 Oxfendazole.
Cattle: A tolerance is established for total oxfendazole residues in edible cattle tissues based on a marker residue concentration of 0.8 part per million (ppm) fenbendazole in the target liver tissue. A fenbendazole concentration of 0.8 ppm in liver corresponds to a total safe concentration of oxfendazole residues of 1.7 ppm in liver. The safe concentrations of total oxfendazole residues in other uncooked edible cattle tissues are: muscle, 0.84 ppm; kidney, 2.5 ppm; and fat, 3.3 ppm. A tolerance refers to the concentration of marker residue in the target tissue selected to monitor for total drug residue in the target animal. A safe concentration is the total residue considered safe in edible tissue.
[55 FR 46943, Nov. 8, 1990]

Title 21 published on 2014-04-01

The following are only the Rules published in the Federal Register after the published date of Title 21.

For a complete list of all Rules, Proposed Rules, and Notices view the Rulemaking tab.

  • 2014-10-28; vol. 79 # 208 - Tuesday, October 28, 2014
    1. 79 FR 64114 - New Animal Drugs; Alfaxalone; Dinoprost; Ivermectin and Clorsulon; Nitrofurazone; Trenbolone and Estradiol Benzoate; Trimethoprim and Sulfadiazine; Tylosin; Change of Sponsor
      GPO FDSys XML | Text
      DEPARTMENT OF HEALTH AND HUMAN SERVICES, Food and Drug Administration
      Final rule, technical amendment.
      This rule is effective October 28, 2014.
      21 CFR Parts 510, 520, 522, 524, and 556

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United States Code

Title 21 published on 2014-04-01

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 21 CFR 556 after this date.

  • 2014-10-28; vol. 79 # 208 - Tuesday, October 28, 2014
    1. 79 FR 64114 - New Animal Drugs; Alfaxalone; Dinoprost; Ivermectin and Clorsulon; Nitrofurazone; Trenbolone and Estradiol Benzoate; Trimethoprim and Sulfadiazine; Tylosin; Change of Sponsor
      GPO FDSys XML | Text
      DEPARTMENT OF HEALTH AND HUMAN SERVICES, Food and Drug Administration
      Final rule, technical amendment.
      This rule is effective October 28, 2014.
      21 CFR Parts 510, 520, 522, 524, and 556