Type of Posting: Notice of Intent to Revise
Posting Date: 06–Apr–2021
Targeted Official Date: 01–May–2022
Expert Committee: Various
In accordance with the 2020–2025 Rules and Procedures of the Council of Experts, this is to provide notice that USP and its Expert Committees, as applicable, intend to revise multiple monographs in response to the revision of General Chapter <941> Characterization of Crystalline and Partially Crystalline Solids by X-Ray Powder Diffraction (XRPD).
General Chapter <941> was proposed for comment in PF 45(1) and is proceeding to Harmonization Stage 4 posting. The revision will appear in the April 30, 2021 monthly publication of USP–NF Online. USP has identified other documentary standards that reference General Chapter <941> and thus require revision to modify these references to refer to the chapter as X-Ray Powder Diffraction 〈941〉 instead of the currently referenced X-Ray Diffraction <941>. These references will be updated on April 30, 2021. A list of the monographs that will be modified can be found here.
All modifications will become official on May 1, 2022, to coincide with the official date of revised General Chapter <941>.
Interested stakeholders are encouraged to alert USP staff to any impact they may recognize related to the update of those monographs.
Should you have any questions or comments, please contact Edmond Biba, Staff Scientist, (301-230-3270 or EXB@usp.org), or the affected monograph’s liaison(s).