Description

4-Hydroxyisophthalic Acid 3-Methyl Ester is a high-purity, functionalized aromatic ester derivative. This compound serves as a versatile and critical chemical intermediate for synthesizing advanced polymers, liquid crystals, and pharmaceutical active ingredients. It is essential for R&D and production teams in the fine chemical, advanced material, and pharmaceutical sectors seeking to develop products with specific optical, thermal, or biological properties.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of novel active pharmaceutical ingredients (APIs) and drug candidates.
• Liquid Crystal Materials: Used as a precursor in the production of advanced liquid crystal displays (LCDs) and optical films.
• Polymer & Resin Modification: Serves as a monomer or cross-linking agent to create high-performance polyesters, epoxy resins, and coatings with enhanced properties.
• Organic Synthesis & R&D: A valuable reagent in academic and industrial research laboratories for constructing complex aromatic structures.
• Dye & Pigment Synthesis: Intermediate in the manufacture of specialized dyes and organic pigments.
• Agrochemicals: Used in the development of advanced herbicides and plant growth regulators.

Basic Information

Product Name	4-Hydroxyisophthalic Acid 3-Methyl Ester
CAS No.	41684-11-1
Molecular Formula	C9H8O5
Molecular Weight	196.16 g/mol
Synonyms	3-(Methoxycarbonyl)-4-hydroxybenzoic Acid; 4-Hydroxyisophthalic Acid Monomethyl Ester; Methyl 4-Hydroxyisophthalate; 4-Hydroxy-1,3-benzenedicarboxylic Acid 3-Methyl Ester; 3-Carbomethoxy-4-hydroxybenzoic Acid; Monomethyl 4-hydroxyisophthalate; 41684-11-1; 4-Hydroxyisophthalic Acid Methyl Ester
EINECS	Contact for details

Quality Control

Our 4-Hydroxyisophthalic Acid 3-Methyl Ester is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, NMR, and IR spectroscopy, to ensure high purity and consistent performance. Certificates of Analysis (COA) detailing all specifications are provided with every shipment to guarantee compliance with your project requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Keep away from strong bases and incompatible organic solvents. The container must be kept tightly closed to prevent moisture absorption.

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	≤ 20 ppm

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