Description

Benzeneacetic Acid, 3,4-Diamino- CAS NO 621-43-2 is a high-purity aromatic diamine derivative of phenylacetic acid, serving as a critical multifunctional intermediate in advanced organic synthesis. Its primary value lies in its dual amino groups, which enable its use in the production of complex heterocyclic compounds, dyes, and high-performance polymers. This compound is essential for research and manufacturing chemists in the pharmaceutical, agrochemical, and specialty chemical industries seeking to develop novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Key building block for the synthesis of various active pharmaceutical ingredients (APIs), particularly those with complex heterocyclic cores.
• Agrochemical Synthesis: Used in the production of advanced herbicides, fungicides, and plant growth regulators.
• Dye and Pigment Manufacturing: Serves as a precursor for azo dyes and other high-performance colorants.
• Polymer Chemistry: Acts as a monomer or cross-linking agent in the production of specialty polyamides, polyimides, and epoxy curing agents.
• Chemical Research & Development: A versatile reagent for organic synthesis in academic and industrial R&D laboratories.
• Coordination Chemistry: Can function as a ligand for metal complexes in catalytic and material science applications.

Basic Information

Product Name	Benzeneacetic Acid, 3,4-Diamino-
CAS No.	621-43-2
Molecular Formula	C8H10N2O2
Molecular Weight	166.18 g/mol
Synonyms	3,4-Diaminophenylacetic Acid; 3,4-Diaminobenzeneacetic Acid; 2-(3,4-Diaminophenyl)acetic Acid; 3,4-Diamino-α-toluic Acid; (3,4-Diaminophenyl)acetic Acid; 4-Amino-3-aminomethylbenzoic Acid (tautomeric form); Contact for details on additional trade names.
EINECS	210-695-6

Quality Control

Our Benzeneacetic Acid, 3,4-Diamino- is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. We provide a detailed Certificate of Analysis (COA) with key parameters including assay, impurity profile, and physical characteristics. Specifications can be tailored to meet research, technical, or pharmaceutical intermediate grade requirements upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and easily oxidized; for long-term storage, consider under an inert atmosphere such as nitrogen or argon. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Light yellow to brown powder or crystals
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 1.5%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.