4-Amino-3-hydroxy-1-naphthalenesulfonic Acid
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This article is compiled based on the United States Pharmacopeia (USP) – 2025 Edition
Issued and maintained by the United States Pharmacopeial Convention (USP)
(1,2,4-Aminonaphtholsulfonic Acid; 1-Amino-2-naphthol-4-sulfonic Acid), C10H9NO4S 239.25 CAS RN®: 116-63-2.—Light purple powder. Use ACS reagent grade.
