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4-Amino-3-hydroxybenzoic acid-CAS-2374-03-0

August 21, 2026

Product Name: 4-Amino-3-hydroxybenzoic acid
Synonyms: 4-AMINO-3-HYDROXYBENZOIC ACID;3-HYDROXY-4-AMINOBENZOIC ACID;4-AMINO-3-HYDROXYBENZOIC ACID 97%;BENZOIC ACID, 4-AMINO-3-HYDROXY-;3-Hydroxy PABA;4-Amino-3-hydroxybenzoic acid,98%;4-AMino-3-hydroxybenzoic acid, 98% 5GR;3-hydroxy-4-AMino acid
CAS: 2374-03-0
MF: C7H7NO3
MW: 153.14

This aromatic building block bears amino, phenolic hydroxyl and carboxylic acid groups on benzene ring, capable of diazotization, esterification, amidation and condensation reactions for diversified derivatization.

Applications

  1. Pharmaceutical Intermediate & Drug‑Discovery Building Block Key synthetic precursor for sphingosine kinase inhibitors, ophthalmic drug impurity reference standards, and neuroprotective drug candidates. Widely applied in medicinal‑chemistry research and impurity profiling for pharmaceutical substances.
  2. Dye Intermediate & Functional Color‑Developing Material The aromatic amino group enables diazotization reaction. It is utilized for manufacturing azo dyes, functional chromogenic materials and raw materials for chemical sensors.
  3. Fine‑Chemical & Organic‑Synthesis Starting Material Serves as versatile starting material for custom organic synthesis, R&D of fine‑chemicals and advanced polymer precursors.

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