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Adapalene Monograph Revision Proposed for Solubility Issue

The USP Small Molecules 3 Expert Committee intends to revise the Adapalene monograph to address a potential solubility issue in the Organic Impurities test. The proposed changes include allowing a larger volume of tetrahydrofuran for the standard stock solution, introducing a two-table format for retention times, and deleting the Limit of Triethylamine test.

Carbachol Monograph Revision - Assay Criteria

The United States Pharmacopeia (USP) is revising the Carbachol monograph to widen the acceptance criteria for Assay from NMT 99.0%-101.0% to NMT 98.0%-102.0%. This change aims to accommodate FDA-approved products with wider specifications and is targeted for publication on May 29, 2026, with an official date of June 1, 2026.