Description

4-Hydroxy-5-Methyl-Isophthalic Acid Diethyl Ester is a high-purity organic ester derivative of isophthalic acid, serving as a critical building block in advanced chemical synthesis. Its value lies in its functional groups, which make it a versatile intermediate for creating complex molecules with tailored properties. This compound is essential for R&D chemists and manufacturers in the pharmaceutical, agrochemical, and specialty polymer industries seeking to develop new active ingredients or high-performance materials.

Application

• Pharmaceutical Intermediate: A key synthon in the research and development of novel active pharmaceutical ingredients (APIs), particularly for constructing complex molecular scaffolds.
• Agrochemical Synthesis: Used in the production of advanced herbicides, fungicides, and plant growth regulators requiring specific aromatic ester functionalities.
• Specialty Polymer & Resin Production: Acts as a monomer or cross-linking agent in the synthesis of high-performance polyesters, coatings, and adhesives with enhanced thermal or chemical resistance.
• Liquid Crystal & OLED Material Research: Serves as a precursor in the development of organic electronic materials and liquid crystal displays (LCDs).
• Dye & Pigment Intermediate: Utilized in the synthesis of complex organic dyes and pigments for industrial applications.
• Organic Synthesis & Chemical Research: A versatile building block for academic and industrial research in medicinal chemistry and material science.

Basic Information

Product Name	4-Hydroxy-5-Methyl-Isophthalic Acid Diethyl Ester
CAS No.	7504-67-8
Molecular Formula	C14H18O6
Molecular Weight	282.29 g/mol
Synonyms	Diethyl 4-Hydroxy-5-Methylisophthalate; 4-Hydroxy-5-Methylbenzene-1,3-dicarboxylic Acid Diethyl Ester; 5-Methyl-4-hydroxyisophthalic Acid Diethyl Ester; Diethyl 5-Methyl-4-hydroxyisophthalate; Isophthalic Acid, 4-Hydroxy-5-Methyl-, Diethyl Ester; 1,3-Benzenedicarboxylic acid, 4-hydroxy-5-methyl-, 1,3-diethyl ester
EINECS	Contact for details

Quality Control

Our 4-Hydroxy-5-Methyl-Isophthalic Acid Diethyl Ester is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC, GC, and NMR, to ensure high purity and consistent performance. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing all relevant specifications. Our quality commitment aligns with cGMP principles for pharmaceutical intermediates, ensuring traceability and reliability for your critical applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Keep away from strong bases and incompatible materials such as strong oxidizing agents. The container should be kept tightly sealed in a dry environment to maintain product integrity.

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
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 2.0%

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