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Atomfair 4-Aminophthalic acid C8H7NO4 CAS 5434-21-9

4-Aminophthalic Acid (CAS No. 5434-21-9) is a high-purity organic compound with the molecular formula C8H7NO4. This white to off-white crystalline powder is a derivative of phthalic acid, featuring an amino group at the 4-position, making it a valuable intermediate in organic synthesis and pharmaceutical research. With a molecular weight of 181.15 g/mol, it exhibits excellent solubility in polar solvents such as water, ethanol, and dimethyl sulfoxide (DMSO). Ideal for researchers and scientists, our 4-Aminophthalic Acid is rigorously tested for purity (≥98% by HPLC) and consistency, ensuring reliable performance in advanced applications. Suitable for use in fluorescence studies, coordination chemistry, and…

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Description

4-Aminophthalic Acid (CAS No. 5434-21-9) is a high-purity organic compound with the molecular formula C8H7NO4. This white to off-white crystalline powder is a derivative of phthalic acid, featuring an amino group at the 4-position, making it a valuable intermediate in organic synthesis and pharmaceutical research. With a molecular weight of 181.15 g/mol, it exhibits excellent solubility in polar solvents such as water, ethanol, and dimethyl sulfoxide (DMSO). Ideal for researchers and scientists, our 4-Aminophthalic Acid is rigorously tested for purity (≥98% by HPLC) and consistency, ensuring reliable performance in advanced applications. Suitable for use in fluorescence studies, coordination chemistry, and as a precursor for dyes and pigments, this compound is packaged under inert conditions to guarantee stability and longevity.

Properties

  • CAS Number: 5434-21-9
  • Complexity: 228
  • IUPAC Name: 4-aminophthalic acid
  • InChI: InChI=1S/C8H7NO4/c9-4-1-2-5(7(10)11)6(3-4)8(12)13/h1-3H,9H2,(H,10,11)(H,12,13)
  • InChI Key: OXSANYRLJHSQEP-UHFFFAOYSA-N
  • Exact Mass: 181.03750770
  • Molecular Formula: C8H7NO4
  • Molecular Weight: 181.15
  • SMILES: C1=CC(=C(C=C1N)C(=O)O)C(=O)O
  • Topological: 101
  • Monoisotopic Mass: 181.03750770
  • Synonyms: 4-Aminophthalic acid, 5434-21-9, 1,2-Benzenedicarboxylic acid, 4-amino-, DTXSID8063880, DTXCID6041688, 226-596-4, 4-aminobenzene-1,2-dicarboxylic acid, 4-Amino-1,2-benzenedicarboxylic acid, MFCD00013985, NSC-15742, 4-Aminophthalicacid, 4-AMINO PHTHALIC ACID, EINECS 226-596-4, 4-Aminophthalic Acid(Contains 3-Aminophthalic Acid), NSC 15742, TZ6K337ZYS, 4-Aminophthalic acid, 97%, SCHEMBL231377, ghl.PD_Mitscher_leg0.1208, SCHEMBL1806915, CHEMBL3278349, 4-amino-2-benzenedicarboxylicacid, BCP30626, NSC15742, SBB059380, AKOS000280910, FA10247, GS-6117, AC-23591, SY013972, DB-052543, A1512, CS-0010092, NS00033053, ST50825164, EN300-57011, H10264, Z276600422, 4-Amino-1,2-benzenedicarboxylic acid;1,2-Benzenedicarboxylic acid, 4-amino-, GM7

Application

4-Aminophthalic Acid is widely utilized as a key building block in the synthesis of fluorescent dyes and coordination polymers. Its amino and carboxyl functional groups enable versatile reactivity, making it valuable in the development of pharmaceutical intermediates and advanced materials. Researchers also employ it in the study of metal-organic frameworks (MOFs) due to its chelating properties. Additionally, it serves as a precursor in the production of high-performance pigments and optoelectronic materials.

Safety and Hazards

GHS Hazard Statements

  • H315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]
  • H319 (100%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
  • H335 (97.7%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]

Precautionary Statements

  • P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501

Hazard Classes and Categories

  • Skin Irrit. 2 (100%)
  • Eye Irrit. 2 (100%)
  • STOT SE 3 (97.7%)

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Disclaimer: Sold exclusively for laboratory research. Prohibited for commercial use, diagnostics, or human/animal applications. Buyers assume all compliance liability.

Disclaimer

Intended Use & Restrictions

This product is sold exclusively for laboratory research, analytical testing, or non-commercial purposes.

  • Strictly prohibited: Resale, repackaging, or formulation into commercial products.
  • Not approved for human/animal use, diagnostics, or manufacturing (including pharmaceuticals, agrochemicals, or consumer goods).

Patent & Regulatory Compliance

Certain molecules may be protected by active patents or regulatory restrictions.

  • Buyers must independently verify patent status (e.g., via USPTO/EPO/CNIPA) and comply with local laws.
  • Atomfair LLC does not provide legal assurances regarding patent non-infringement or jurisdictional compliance.

Liability Release

By purchasing, the buyer agrees to:

  • Use this product only as permitted by law.
  • Indemnify Atomfair LLC against all claims arising from misuse, patent infringement, or regulatory violations.

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