Description

3-(1-Ethyl-1H-Pyrazol-4-Yl)-Isoxazole-5-Carboxylic Acid is a high-value heterocyclic building block and advanced pharmaceutical intermediate. This compound matters for its role in the synthesis of novel active pharmaceutical ingredients (APIs), particularly in medicinal chemistry research targeting specific biological pathways. It is primarily needed by pharmaceutical R&D departments, agrochemical innovators, and specialty chemical manufacturers developing new therapeutic agents and crop protection solutions.

Application

• Pharmaceutical Intermediate: A key synthon for the development of novel small-molecule drugs, particularly in oncology and anti-inflammatory research.
• Agrochemical Synthesis: Used in the research and production of next-generation herbicides and fungicides.
• Chemical Biology Probe Development: Serves as a core scaffold for creating tool compounds to study enzyme function and protein interactions.
• Material Science Research: Investigated as a precursor for functional polymers and advanced organic materials.
• Contract Research & Manufacturing (CRO/CMO): Supplied to service organizations for custom synthesis and process development projects.
• Academic Research: Utilized in university and institutional labs for heterocyclic chemistry and medicinal chemistry studies.

Basic Information

Item	Detail
Product Name	3-(1-Ethyl-1H-Pyrazol-4-Yl)-Isoxazole-5-Carboxylic Acid
CAS No.	957487-34-2
Molecular Formula	C9H9N3O3
Molecular Weight	207.19 g/mol
Synonyms	5-Isoxazolecarboxylic acid, 3-(1-ethyl-1H-pyrazol-4-yl)-; 3-(1-Ethyl-1H-pyrazol-4-yl)isoxazole-5-carboxylic acid; 1-Ethyl-4-(5-carboxyisoxazol-3-yl)pyrazole; 957487-34-2; AI3-72485; AKOS040745186; SCHEMBL2184241; ZINC000253919587
EINECS	Contact for details

Quality Control

Our production of 3-(1-Ethyl-1H-Pyrazol-4-Yl)-Isoxazole-5-Carboxylic Acid adheres to stringent internal quality standards to ensure batch-to-batch consistency and reliability for critical R&D and scale-up work. Each lot is fully characterized and undergoes rigorous analytical testing. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are provided with every shipment.

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). This material is hygroscopic (moisture-sensitive); keep the container tightly sealed in a dry environment to prevent degradation. Keep away from strong acids and organic solvents.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 1.0%
Residue on Ignition	≤ 0.5%
Heavy Metals	≤ 20 ppm

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