21 CFR 556.308 - Halofuginone hydrobromide.

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There are 3 Updates appearing in the Federal Register for 21 CFR 556. View below or at eCFR (GPOAccess)
§ 556.308 Halofuginone hydrobromide.
The marker residue selected to monitor for total residues of halofuginone hydrobromide in broilers and turkeys is parent halofuginone hydrobromide and the target tissue selected is liver. A tolerance is established in broilers of 0.16 part per million and in turkeys of 0.13 part per million for parent halofuginone hydrobromide in liver. These marker residue concentrations in liver correspond to total residue concentrations of 0.3 part per million in liver. The safe concentrations for total residues of halofuginone hydrobromide in the uncooked edible tissues of broilers and turkeys are 0.1 part per million in muscle, 0.3 part per million in liver, and 0.2 part per million in skin with adhering fat. As used in this section, “tolerance” refers to a concentration of a marker residue in the target tissue selected to monitor for total residues of the drug in the target animal, and “safe concentrations” refers to the concentrations of total residues considered safe in edible tissues.
[54 FR 28052, July 5, 1989, as amended at 56 FR 8711, Mar. 1, 1991; 57 FR 21209, May 19, 1992]

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