21 CFR 556.277 - Fenprostalene.

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There are 4 Updates appearing in the Federal Register for 21 CFR 556. View below or at eCFR (GPOAccess)
§ 556.277 Fenprostalene.
A tolerance for marker residue of fenprostalene in cattle is not needed. The safe concentrations for the total residues of fenprostalene in the uncooked edible tissues of cattle are 10 parts per billion in muscle, 20 parts per billion in liver, 30 parts per billion in kidney, 40 parts per billion in fat, and 100 parts per billion in the injection site. 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” refer to the concentrations of total residues considered safe in edible tissues.
[49 FR 26716, June 29, 1984]

Title 21 published on 2013-04-01

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.

  • 2014-04-07; vol. 79 # 66 - Monday, April 7, 2014
    1. 79 FR 18990 - Zoetis Inc., et al.; Withdrawal of Approval of New Animal Drug Applications for Combination Drug Medicated Feeds Containing an Arsenical Drug; Correction
      GPO FDSys XML | Text
      DEPARTMENT OF HEALTH AND HUMAN SERVICES, Food and Drug Administration
      Notification of withdrawal of approval; correction.
      This correction is effective April 7, 2014.
      21 CFR Parts 556 and 558

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United States Code

Title 21 published on 2013-04-01

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

  • 2014-04-07; vol. 79 # 66 - Monday, April 7, 2014
    1. 79 FR 18990 - Zoetis Inc., et al.; Withdrawal of Approval of New Animal Drug Applications for Combination Drug Medicated Feeds Containing an Arsenical Drug; Correction
      GPO FDSys XML | Text
      DEPARTMENT OF HEALTH AND HUMAN SERVICES, Food and Drug Administration
      Notification of withdrawal of approval; correction.
      This correction is effective April 7, 2014.
      21 CFR Parts 556 and 558