Description

5-(4-Carboxyphenyl)Isoxazole-3-Carboxylic Acid CAS NO 1375064-71-3 is a high-purity, multifunctional organic compound featuring dual carboxylic acid groups on an isoxazole-phenyl core. This structure makes it a valuable and versatile pharmaceutical intermediate and building block for advanced organic synthesis. It is primarily sought after by R&D and production teams in the pharmaceutical, agrochemical, and specialty chemical industries for developing new active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of novel drug candidates, particularly those targeting inflammation, CNS disorders, and metabolic diseases.
• Agrochemical Synthesis: Serves as a building block for developing new herbicides, fungicides, and plant growth regulators with enhanced efficacy.
• Ligand and Chelator Development: Utilized in creating complexing agents and metal-organic frameworks (MOFs) due to its multiple coordination sites.
• Polymer and Material Science: Incorporated into polymer backbones to impart specific chemical functionality, thermal stability, or biodegradability.
• Organic Synthesis Building Block: Used in multi-step synthetic routes to construct more complex heterocyclic systems and fine chemicals.
• Bioconjugation and Probe Chemistry: The carboxylic acid groups enable covalent attachment to biomolecules for diagnostic or research applications.

Basic Information

Product Name	5-(4-Carboxyphenyl)Isoxazole-3-Carboxylic Acid
CAS No.	1375064-71-3
Molecular Formula	C11H7NO5
Molecular Weight	233.18 g/mol
Synonyms	5-(4-Carboxyphenyl)-1,2-oxazole-3-carboxylic acid; 3-Isoxazolecarboxylic acid, 5-(4-carboxyphenyl)-; 4-(3-Carboxyisoxazol-5-yl)benzoic acid; 5-(4-Carboxy-phenyl)-isoxazole-3-carboxylic acid; BCPIC; [1,1'-Biphenyl]-4-carboxylic acid, 4'-(1H-tetrazol-5-yl)- (related compound); Isoxazole dicarboxylic acid derivative
EINECS	Contact for details

Quality Control

Every batch of 5-(4-Carboxyphenyl)Isoxazole-3-Carboxylic Acid is manufactured and tested under a strict quality management system. We guarantee high chemical purity and consistency, with specifications tailored to meet the rigorous demands of pharmaceutical R&D and production. Certificates of Analysis (COA) documenting identity, purity, and impurity profiles are provided with each shipment and are available upon request.

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 organic solvents. For long-term storage, consider conditions under an inert atmosphere to maintain optimal purity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Purity (HPLC, Area %)	≥ 99.0%
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.