Methyl 3,4-diaminobenzoate

Methyl 3,4-diaminobenzoate (CAS 36692-49-6) is a high-purity diamino-substituted benzoate ester intermediate widely used in pharmaceutical synthesis, organic chemistry research, dye manufacturing, and fine chemical production. This compound features two amino groups at the meta- and para-positions of the methyl benzoate structure, making it a versatile building block for the development of complex organic molecules and active pharmaceutical ingredients (APIs). As a key intermediate in condensation reactions, heterocyclic synthesis, and functional group transformations, it exhibits excellent reactivity in amide coupling, cyclization reactions, and electrophilic aromatic substitution pathways. Our product is manufactured under strict quality control standards, ensuring a purity of ≥98%, making it ideal for pharmaceutical manufacturing, medicinal chemistry research, dye intermediate synthesis, and scale-up production. This compound is particularly valuable in the synthesis of pharmaceuticals containing diaminobenzoate scaffolds, benzimidazole derivatives, quinoxaline-based APIs, and photochemical intermediates. As a reliable benzene derivative intermediate, it serves as an important precursor for constructing amino-functionalized aromatic systems in drug discovery and specialty chemical development programs.

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Product Name	Methyl 3,4-diaminobenzoate
CAS Number	36692-49-6
Chinese Name	3,4-二氨基苯甲酸甲酯
Synonyms	Methyl 3,4-diaminobenzenecarboxylate; Benzoic acid, 3,4-diamino-, methyl ester; 3,4-Diaminobenzoic acid methyl ester; Methyl 4-amino-3-aminobenzoate; 3,4-DAB methyl ester; Methyl 3,4-diaminobenzoate hydrochloride (salt form); 1,2-Diamino-4-(methoxycarbonyl)benzene
Chinese Synonyms	3,4-二氨基苯甲酸甲酯; 间对二氨基苯甲酸甲酯; 4-氨基-3-氨基苯甲酸甲酯; 3,4-二氨基苯甲酸甲酯盐酸盐
Molecular Formula	C₈H₁₀N₂O₂
Molecular Weight	166.18 g/mol
Purity	≥ 98% (HPLC)
Product Category	Pharmaceutical Intermediates / Benzene Derivatives / Diaminobenzoates
Appearance	Light Yellow to Brown Crystalline Powder or Solid
Melting Point	110-115°C (estimated)
Storage Conditions	Store in a cool, dry, well-ventilated area away from light and moisture. Keep container tightly closed. Protect from oxidation and strong oxidizing agents.
Shelf Life	24 months under recommended storage conditions
Packaging	1kg/foil bag, 5kg/drum, 25kg/drum, or customized according to customer requirements
Applications	Pharmaceutical intermediates, organic synthesis, API manufacturing, dye intermediates, benzimidazole synthesis, quinoxaline preparation, heterocyclic chemistry, photochemical research, agrochemical intermediates
Reactivity	Suitable for amide coupling, cyclization reactions (benzimidazole/quinoxaline formation), condensation reactions, esterification, and electrophilic aromatic substitution