21 CFR Part 320, Subpart B - Procedures for Determining the Bioavailability or Bioequivalence of Drug Products

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42 FR 1648, Jan. 7, 1977, unless otherwise noted.

Title 21 published on 2015-04-01.

No entries appear in the Federal Register after this date, for 21 CFR Part 320.

This is a list of United States Code sections, Statutes at Large, Public Laws, and Presidential Documents, which provide rulemaking authority for this CFR Part.

This list is taken from the Parallel Table of Authorities and Rules provided by GPO [Government Printing Office].

It is not guaranteed to be accurate or up-to-date, though we do refresh the database weekly. More limitations on accuracy are described at the GPO site.

United States Code

Title 21 published on 2015-04-01

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 21 CFR Part 320 after this date.

  • 2015-04-24; vol. 80 # 79 - Friday, April 24, 2015
    1. 80 FR 22953 - Abbreviated New Drug Applications and 505(b)(2) Applications; Extension of Comment Period
      GPO FDSys XML | Text
      DEPARTMENT OF HEALTH AND HUMAN SERVICES, Food and Drug Administration
      Proposed rule; extension of comment period.
      FDA is extending the comment period on the proposed rule published February 6, 2015 (80 FR 6802). Submit either electronic or written comments on the proposed rule by June 8, 2015.
      21 CFR Parts 314 and 320