Description

4,5-Dimethoxyphthalic Acid Dimethyl Ester is a high-purity, versatile diester derivative of phthalic acid, serving as a critical building block in advanced organic synthesis. Its value lies in its dual methoxy and ester functionalities, which make it an essential intermediate for constructing complex molecular architectures. This compound is primarily needed by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and specialty chemical industries for applications ranging from active pharmaceutical ingredient (API) synthesis to the development of functional materials and dyes.

Application

• Pharmaceutical Intermediate: A key synthon in the synthesis of complex heterocycles and active pharmaceutical ingredients (APIs), particularly those requiring a substituted phthalate core structure.
• Agrochemical Synthesis: Used in the research and production of advanced herbicides, fungicides, and plant growth regulators where its aromatic ring system provides a stable backbone for functionalization.
• Dye and Pigment Manufacturing: Serves as a precursor for the synthesis of specialized phthalocyanine dyes and high-performance organic pigments, leveraging its dimethoxy-substituted aromatic system.
• Polymer Chemistry: Acts as a monomer or cross-linking agent in the development of specialty polyesters and epoxy resins, contributing to thermal stability and specific material properties.
• Liquid Crystal and OLED Materials: Employed in the synthesis of organic electronic materials, where its planar, substituted structure is beneficial for charge transport and luminescence properties.
• Chemical Research & Development: A valuable reagent in academic and industrial labs for methodological studies, including esterification, ether cleavage, and palladium-catalyzed coupling reactions.

Basic Information

Product Name	4,5-Dimethoxyphthalic Acid Dimethyl Ester
CAS No.	17078-61-4
Molecular Formula	C₁₂H₁₄O₆
Molecular Weight	254.24 g/mol
Synonyms	Dimethyl 4,5-Dimethoxyphthalate; 4,5-Dimethoxyphthalic Acid Dimethyl Ester; 1,2-Dimethyl 4,5-Dimethoxybenzene-1,2-dicarboxylate; Phthalic Acid, 4,5-Dimethoxy-, Dimethyl Ester; 4,5-Dimethoxyphenyl-1,2-dicarboxylic Acid Dimethyl Ester; 4,5-Dimethoxy-1,2-benzenedicarboxylic Acid Dimethyl Ester; 4,5-Dimethoxyphthalate Dimethyl Ester; 4,5-Dimethoxybenzene-1,2-dicarboxylic Acid Dimethyl Ester
EINECS	Contact for details

Quality Control

Our 4,5-Dimethoxyphthalic Acid Dimethyl Ester is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure it meets the high-purity standards required for synthetic applications. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are provided with every shipment to guarantee traceability and batch-to-batch consistency for your critical R&D and production processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). Keep away from strong oxidizing agents, strong bases, and heat sources.

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 (as Pb)	≤ 20 ppm

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