Description

Dimethyl 4,5-Dihydroxyphthalate is a high-purity organic ester derivative of phthalic acid, serving as a versatile and critical synthetic intermediate in advanced chemical manufacturing. Its value lies in the reactive phenolic hydroxyl and ester functional groups, which enable its use in constructing complex molecular architectures for high-performance materials. This compound is essential for R&D and production chemists in the pharmaceutical, agrochemical, and specialty polymer industries seeking to develop novel active ingredients and functional monomers.

Application

• Pharmaceutical Intermediate: Key building block for the synthesis of active pharmaceutical ingredients (APIs), particularly those with complex polycyclic structures.
• Agrochemical Synthesis: Used in the production of advanced herbicides, fungicides, and plant growth regulators.
• Polymer & Resin Modifier: Acts as a monomer or cross-linking agent in the manufacture of specialty polyesters, epoxy resins, and high-temperature polymers.
• Dye & Pigment Precursor: Intermediate in the synthesis of anthraquinone and other high-value organic colorants.
• Liquid Crystal & OLED Materials: A starting material for creating functional organic molecules used in electronic displays and optoelectronic devices.
• Chelating Agent Synthesis: Serves as a precursor for ligands used in metal complexation and catalysis.
• Academic & Industrial R&D: A valuable reagent for methodological development and exploring new chemical reactions in laboratory settings.

Basic Information

Product Name	Dimethyl 4,5-Dihydroxyphthalate
CAS No.	66323-03-3
Molecular Formula	C10H10O6
Molecular Weight	226.18 g/mol
Synonyms	4,5-Dihydroxyphthalic Acid Dimethyl Ester; Dimethyl 4,5-Dihydroxy-1,2-benzenedicarboxylate; 1,2-Benzenedicarboxylic Acid, 4,5-Dihydroxy-, Dimethyl Ester; 4,5-Dihydroxyphthalic Acid Dimethyl Ester; Phthalic Acid, 4,5-Dihydroxy-, Dimethyl Ester
EINECS	Contact for details

Quality Control

Our Dimethyl 4,5-Dihydroxyphthalate is manufactured under strict quality management systems to ensure batch-to-batch consistency and reliability. Each lot undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation. A detailed Certificate of Analysis (COA) is provided with every shipment, documenting compliance with agreed specifications. We support cGMP and ISO 9001 standards for pharmaceutical and industrial applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at room temperature (15-25°C). Due to its property of being easily oxidized, long-term storage under an inert atmosphere (nitrogen or argon) is recommended for optimal stability. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 10 ppm

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