Description

4-Oxo-3,4-Dihydro-2H-Chromene-8-Carboxylic Acid is a high-purity chromene derivative, a key heterocyclic building block prized for its structural complexity and functional versatility. This compound is essential for advanced organic synthesis, particularly in the development of novel active pharmaceutical ingredients (APIs) and fine chemicals. It is primarily sought by R&D chemists and process development teams in the pharmaceutical, agrochemical, and specialty chemical industries.

Application

• Pharmaceutical Intermediate: A critical precursor in the synthesis of complex drug molecules, particularly those with chromene or coumarin-based scaffolds.
• Agrochemical Research: Used in the development of new herbicides, fungicides, and plant growth regulators.
• Organic Synthesis Building Block: Serves as a versatile starting material for constructing fused heterocyclic systems and complex natural product analogs.
• Material Science Research: Investigated as a monomer or functional component in the development of advanced polymers and organic electronic materials.
• Dye & Pigment Intermediate: Utilized in the synthesis of specialized chromophores and colorants.
• Academic & Contract Research: A valuable reagent for universities and CROs conducting research in medicinal chemistry and synthetic methodology.

Basic Information

Product Name	4-Oxo-3,4-Dihydro-2H-Chromene-8-Carboxylic Acid
CAS No.	90921-10-1
Molecular Formula	C10H8O4
Molecular Weight	192.17 g/mol
Synonyms	8-Carboxy-4-chromenone; 8-Carboxy-4H-chromen-4-one; 4-Oxo-4H-chromene-8-carboxylic acid; 4-Oxo-4H-1-benzopyran-8-carboxylic acid; 4H-1-Benzopyran-4-one, 8-carboxy-; 8-Carboxycoumarin; 4-Oxo-3,4-dihydro-2H-1-benzopyran-8-carboxylic acid
EINECS	Contact for details

Quality Control

Our 4-Oxo-3,4-Dihydro-2H-Chromene-8-Carboxylic Acid is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation via FT-IR and NMR, to ensure it meets the high standards required for research and industrial synthesis. A Certificate of Analysis (COA) detailing all specifications is provided with every shipment.

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). The product is light-sensitive and should be stored away from strong acids and organic solvents. Keep the container tightly sealed to protect from moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (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.