Letter to FDA: 4-Aminophenol Share page: CHPA recognizes the need for modernization of USP monographs. CHPA member companies are dedicated to fulfilling their commitment outlined in the letter to this Planning Committee on February 2, 2011. Download Document Issues: OTC Medicines Acetaminophen Related Posts Press Releases and Statements House Leaders Prioritize OMUFA Renewal, CHPA Welcomes Progress Apr 1, 2025 Press Releases and Statements CHPA Statement on Senate Confirmation of Dr. Makary as FDA Commissioner Mar 25, 2025 Press Releases and Statements CHPA Applauds New Mississippi Law to Prevent Unlawful Purchases of PSE-Containing Medicines Mar 21, 2025