Description

4-Hydroxy-2-oxo-2H-1-benzopyran-3-carboxylic acid ethyl ester is a high-purity organic compound belonging to the coumarin family, serving as a versatile chemical intermediate. Its value lies in its well-defined structure, which is critical for synthesizing more complex molecules in research and industrial processes. This product is essential for manufacturers and R&D laboratories in the pharmaceutical, agrochemical, and fine chemical sectors seeking a reliable building block for active ingredient development.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of various active pharmaceutical ingredients (APIs) and drug candidates.
• Agrochemical Synthesis: Used in the development of novel herbicides, fungicides, and other crop protection agents.
• Fine Chemical Production: Serves as a building block for dyes, pigments, and other specialty organic compounds.
• Research & Development: A valuable reagent in academic and industrial laboratories for exploring new synthetic pathways and material science.
• Fluorescent Probe Synthesis: Utilized in creating coumarin-based fluorescent markers and sensors for biochemical analysis.

Basic Information

Product Name	4-Hydroxy-2-oxo-2H-1-benzopyran-3-carboxylic acid ethyl ester
CAS No.	1821-20-1
Molecular Formula	C₁₂H₁₀O₅
Molecular Weight	234.20 g/mol
Synonyms	Ethyl 4-hydroxy-2-oxo-2H-chromene-3-carboxylate; Ethyl 4-hydroxycoumarin-3-carboxylate; 4-Hydroxycoumarin-3-carboxylic acid ethyl ester; 3-Carbethoxy-4-hydroxycoumarin; 3-Ethoxycarbonyl-4-hydroxycoumarin; NSC 403697; 4-Hydroxy-3-carbethoxycoumarin
EINECS	217-345-6

Quality Control

Our 4-Hydroxy-2-oxo-2H-1-benzopyran-3-carboxylic acid ethyl ester is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets the highest standards of purity and consistency. Certificates of Analysis (COA) detailing specific results for identity, purity, and impurity profiles are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (15-25°C). Keep away from incompatible materials such as strong oxidizing agents.

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%

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