Description

5-Hydroxy-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 the unique combination of a phenolic hydroxyl group and two ester functionalities, which provides versatile reactivity for creating complex molecular architectures. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty polymer industries who require a reliable, high-quality intermediate for developing active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of novel active pharmaceutical ingredients (APIs), particularly for compounds requiring a substituted aromatic core.
• Agrochemical Synthesis: Used in the development of advanced herbicides, fungicides, and plant growth regulators where specific aromatic ester chemistry is required.
• Polymer & Resin Modifier: Acts as a monomer or cross-linking agent in the production of specialty polyesters, epoxy resins, and coatings to enhance thermal stability and chemical resistance.
• Liquid Crystal & OLED Materials: Serves as a foundational unit in the synthesis of organic electronic materials and liquid crystal compounds for display technologies.
• Organic Synthesis Building Block: Utilized in academic and industrial R&D for constructing complex molecules via reactions at the hydroxyl or ester groups.
• Dye & Pigment Intermediate: Employed in the manufacture of high-performance dyes and organic pigments due to its stable aromatic structure.

Basic Information

Product Name	5-Hydroxy-Isophthalic Acid Diethyl Ester
CAS No.	39630-68-7
Molecular Formula	C12H14O6
Molecular Weight	254.24 g/mol
Synonyms	Diethyl 5-Hydroxyisophthalate; 1,3-Benzenedicarboxylic Acid, 5-Hydroxy-, Diethyl Ester; 5-Hydroxyisophthalic Acid Diethyl Ester; Diethyl 5-Hydroxybenzene-1,3-dicarboxylate; 5-Hydroxy-m-phthalic Acid Diethyl Ester; Isophthalic Acid, 5-Hydroxy-, Diethyl Ester
EINECS	Contact for details

Quality Control

Our 5-Hydroxy-Isophthalic Acid Diethyl Ester 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 synthesis applications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with each shipment to guarantee traceability and consistency for our global B2B clients.

Storage

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

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)	≤ 10 ppm

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