Description

3-(1-Ethyl-5-Methyl-1H-Pyrazol-4-Yl)Isoxazole-5-Carboxylic Acid (Saltdata: Free) is a high-purity heterocyclic carboxylic acid building block of significant interest in advanced organic synthesis. This compound matters as a versatile and critical intermediate for constructing complex molecular architectures, particularly in the development of novel active pharmaceutical ingredients (APIs). It is primarily needed by research and development teams in the pharmaceutical, agrochemical, and specialty chemical industries seeking to create new compounds with targeted biological activities.

Application

• Pharmaceutical Intermediate: A key building block in the research and synthesis of novel drug candidates, particularly for central nervous system (CNS) and anti-inflammatory targets.
• Agrochemical Synthesis: Used in the development of new generation herbicides, fungicides, and insecticides, leveraging its unique heterocyclic core.
• Chemical Research & Development: Serves as a versatile scaffold for medicinal chemistry, enabling structure-activity relationship (SAR) studies and library synthesis.
• Material Science Precursor: Potential use in the synthesis of advanced organic materials, such as ligands for catalysts or components for organic electronics.
• Custom Synthesis & Contract Manufacturing: Supplied to CDMOs (Contract Development and Manufacturing Organizations) for the production of bespoke compounds and clinical trial materials.

Basic Information

Product Name	3-(1-Ethyl-5-Methyl-1H-Pyrazol-4-Yl)Isoxazole-5-Carboxylic Acid (Saltdata: Free)
CAS No.	957487-33-1
Molecular Formula	C10H11N3O3
Molecular Weight	221.21 g/mol
Synonyms	3-(1-Ethyl-5-methyl-1H-pyrazol-4-yl)-1,2-oxazole-5-carboxylic acid; 3-(1-Ethyl-5-methylpyrazol-4-yl)isoxazole-5-carboxylic acid; 5-Carboxy-3-(1-ethyl-5-methyl-1H-pyrazol-4-yl)isoxazole; 1,2-Oxazole-5-carboxylic acid, 3-(1-ethyl-5-methyl-1H-pyrazol-4-yl)-; 957487-33-1; 3-(1-Ethyl-5-methyl-1H-pyrazol-4-yl)isoxazole-5-carboxylic acid (free acid).
EINECS	Contact for details

Quality Control

Our 3-(1-Ethyl-5-Methyl-1H-Pyrazol-4-Yl)Isoxazole-5-Carboxylic Acid is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing to ensure identity, purity, and consistency, meeting the high standards required for pharmaceutical and agrochemical R&D. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with each shipment and is available upon request.

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 heat, sparks, and open flame. For long-term storage, consider storage under an inert atmosphere to maintain optimal stability.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 10 ppm
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 1.0%

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