Description

5-(Methoxycarbonyl)Isophthalic Acid is a high-purity, multifunctional aromatic dicarboxylic acid derivative that serves as a critical building block in advanced organic synthesis. Its unique structure, featuring both a carboxylic acid and a methyl ester group on the same benzene ring, makes it an exceptionally versatile intermediate for creating complex molecular architectures. This compound is essential for R&D chemists and production engineers in the pharmaceutical, agrochemical, and specialty polymer industries seeking to develop novel active ingredients and high-performance materials.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for drugs targeting metabolic and central nervous system disorders.
• Agrochemical Synthesis: Used in the production of advanced herbicides, fungicides, and plant growth regulators due to its ability to modify bioavailability and stability.
• Polymer & Resin Modifier: Serves as a co-monomer or cross-linking agent in the manufacture of high-temperature resistant polyesters, polyamides, and epoxy resins, enhancing mechanical and thermal properties.
• Liquid Crystal & OLED Materials: A crucial building block for synthesizing aromatic cores used in liquid crystal displays (LCDs) and organic light-emitting diodes (OLEDs).
• Metal-Organic Frameworks (MOFs): Acts as an organic linker in the construction of MOFs for gas storage, separation, and catalysis applications.
• Dye & Pigment Intermediate: Employed in the synthesis of complex organic dyes and pigments, contributing to color fastness and molecular stability.
• Corrosion Inhibitor Formulation: Used as a component in high-performance corrosion inhibitor blends for industrial cooling and boiler water systems.
• Academic & Contract Research: A valuable reagent for methodological development and exploratory synthesis in university and CRO laboratory settings.

Basic Information

Product Name	5-(Methoxycarbonyl)Isophthalic Acid
CAS No.	18263-95-1
Molecular Formula	C10H8O6
Molecular Weight	224.17 g/mol
Synonyms	Monomethyl 5-carboxyisophthalate; 5-Carbomethoxyisophthalic Acid; Isophthalic Acid, 5-(methoxycarbonyl)-; Methyl 5-carboxyisophthalate; 5-Methoxycarbonylbenzene-1,3-dicarboxylic acid; 1,3-Benzenedicarboxylic acid, 5-(methoxycarbonyl)-; 5-(Methoxycarbonyl)benzene-1,3-dicarboxylic acid
EINECS	Contact for details

Quality Control

Our 5-(Methoxycarbonyl)Isophthalic Acid is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for sensitive synthetic applications. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing all critical parameters. Our quality commitment ensures batch-to-batch consistency, traceability, and reliability for your production processes.

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). Keep away from heat, sparks, and open flame. The product is hygroscopic (moisture-sensitive); ensure containers are sealed after each use to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	245 - 250 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm
Related Substances (HPLC)	Total impurities ≤ 2.0%

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