Description

4-Hydroxybenzisoxazole-3-Carboxylic Acid is a high-purity organic compound serving as a versatile synthetic intermediate. Its value lies in its functionalized benzisoxazole core, which is critical for constructing complex molecules with targeted biological activity. This product is essential for research and development chemists in the pharmaceutical and agrochemical industries, where it is used to develop new active ingredients.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of novel drug candidates, particularly those targeting central nervous system disorders.
• Agrochemical Synthesis: Used in the research and production of advanced herbicides and fungicides.
• Organic Synthesis Research: A valuable scaffold for medicinal chemistry and material science research due to its fused heterocyclic structure.
• Chemical Reference Standard: Serves as a high-purity standard for analytical method development and quality control in chemical manufacturing.
• Ligand and Catalyst Development: Potential precursor for creating specialized ligands used in catalytic processes.

Basic Information

Product Name	4-Hydroxybenzisoxazole-3-Carboxylic Acid
CAS No.	57764-43-9
Molecular Formula	C8H5NO4
Molecular Weight	179.13 g/mol
Synonyms	3-Carboxy-4-hydroxy-1,2-benzisoxazole; 4-Hydroxy-1,2-benzisoxazole-3-carboxylic acid; 1,2-Benzisoxazole-3-carboxylic acid, 4-hydroxy-; 4-Hydroxybenz[d]isoxazole-3-carboxylic acid; 3-Carboxy-4-hydroxybenzisoxazole; 4-Hydroxy-3-benzisoxazolecarboxylic acid
EINECS	Contact for details

Quality Control

Our 4-Hydroxybenzisoxazole-3-Carboxylic Acid is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation via IR and NMR spectroscopy, to ensure it meets exacting research and production-grade specifications. A detailed Certificate of Analysis (COA) is provided with every shipment to guarantee traceability and compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Keep away from strong acids and incompatible organic solvents. The container must be kept tightly sealed to protect the product from moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 10 ppm

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