Description

4,5-Dimethoxy-Phthalic Anhydride is a specialized aromatic anhydride derivative, distinguished by its methoxy substituents which impart unique reactivity and solubility characteristics. This compound serves as a versatile and high-value chemical building block for synthesizing complex organic molecules, particularly in advanced material and pharmaceutical research. It is primarily sought after by R&D chemists and process engineers in the pharmaceutical, agrochemical, and specialty polymer industries for creating novel compounds with tailored properties.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of active pharmaceutical ingredients (APIs), especially for compounds with complex polycyclic structures.
• Agrochemical Synthesis: Used in the development of advanced herbicides, fungicides, and plant growth regulators.
• Functional Dye & Pigment Manufacturing: Serves as a core component for producing high-performance, light-fast organic dyes and pigments.
• Polymer & Resin Modifier: Incorporated into polymer backbones (e.g., polyimides, epoxy resins) to enhance thermal stability, solubility, and optical properties.
• Liquid Crystal & OLED Material Research: Acts as a building block for creating novel organic electronic materials.
• Academic & Contract Research: Essential reagent for methodological development and exploratory organic synthesis in research laboratories.

Basic Information

Item	Detail
Product Name	4,5-Dimethoxy-Phthalic Anhydride
CAS No.	4821-94-7
Molecular Formula	C10H8O5
Molecular Weight	208.17 g/mol
Synonyms	4,5-Dimethoxyphthalic Anhydride; 4,5-Dimethoxy-1,3-isobenzofurandione; 1,3-Dioxo-1,3-dihydro-2-benzofuran-4,5-diol dimethyl ether; 4,5-Dimethoxyphtalic Anhydride; 4,5-Dimethoxybenzene-1,2-dicarboxylic Anhydride; DMOPA
EINECS	Contact for details

Quality Control

Our 4,5-Dimethoxy-Phthalic Anhydride is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure high purity and consistent performance. We provide comprehensive Certificates of Analysis (COA) detailing purity, identity, and impurity profiles. Our quality protocols are designed to meet the stringent requirements of pharmaceutical and advanced material applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product stability and reactivity.

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	≤ 1.0%
Heavy Metals	≤ 20 ppm

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