4-Imidazoleacrylic Acid

This article is compiled based on the United States Pharmacopeia (USP) – 2025 Edition

Issued and maintained by the United States Pharmacopeial Convention (USP)

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(3-(4-Imidazolyl)acrylic acid; Urocanic acid), C₆H₆N₂O₂     138.12   CAS RN: 104-98-3.—Use a suitable grade with a content of NLT 99%. _{(USP 1-Dec-2024)}