Description

5-Hydroxy-4-Oxo-4H-Pyran-2-Carboxylic Acid is a versatile heterocyclic carboxylic acid derivative that serves as a key synthetic intermediate and building block in advanced organic chemistry. Its unique pyranone structure makes it valuable for constructing complex molecular architectures and functional materials. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and fine chemical sectors seeking to develop new active ingredients or specialty chemicals.

Application

• Pharmaceutical Intermediate: A crucial precursor in the synthesis of various active pharmaceutical ingredients (APIs), particularly those with heterocyclic frameworks.
• Agrochemical Synthesis: Used in the development of novel herbicides, fungicides, and plant growth regulators.
• Fine Chemical Building Block: Employed in the production of dyes, pigments, and complex organic molecules for specialty applications.
• Coordination Chemistry & Ligand Synthesis: Acts as a chelating agent or ligand precursor for metal complexes in catalysis and material science.
• Academic & Industrial Research: Serves as a standard reagent in methodological development and exploratory chemistry for new compound libraries.
• Material Science Precursor: Potential use in the synthesis of organic electronic materials or metal-organic frameworks (MOFs).

Basic Information

Product Name	5-Hydroxy-4-Oxo-4H-Pyran-2-Carboxylic Acid
CAS No.	499-78-5
Molecular Formula	C7H4O5
Molecular Weight	168.10 g/mol
Synonyms	5-Hydroxy-4-oxo-4H-pyran-2-carboxylic acid; Comanic acid; 5-Hydroxy-2-oxo-2H-pyran-4-carboxylic acid; 5-Hydroxy-4-oxo-4H-pyran-2-carboxylic acid; 4-Oxo-5-hydroxy-4H-pyran-2-carboxylic acid; 2-Pyrancarboxylic acid, 5-hydroxy-4-oxo-; 5-Hydroxy-4-oxo-4H-pyran-2-carboxylic acid (Comanic Acid)
EINECS	207-883-5

Quality Control

Our 5-Hydroxy-4-Oxo-4H-Pyran-2-Carboxylic Acid is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation via FT-IR and NMR spectroscopy, to ensure it meets the high standards required for research and industrial synthesis. A detailed Certificate of Analysis (COA) is provided with every shipment, documenting all critical quality parameters. We support compliance with global regulatory frameworks, including REACH.

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 strong acids and incompatible materials such as strong oxidizing agents and bases. The container must be kept tightly sealed to protect the product from moisture absorption.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm

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