Description

3-(1-Ethyl-5-Methyl-1H-Pyrazol-4-Yl)-4,5-Dihydro-Isoxazole-5-Carboxylic Acid CAS NO 957258-38-7 is a high-purity, advanced pharmaceutical intermediate characterized by its unique fused heterocyclic structure. This compound is of significant commercial value for its role as a critical building block in the synthesis of novel active pharmaceutical ingredients (APIs). It is primarily sought after by research institutions and manufacturers in the pharmaceutical and agrochemical industries for developing new therapeutic and crop protection agents.

Application

• Pharmaceutical Intermediate: A key precursor in the research and synthesis of novel drug candidates, particularly those targeting central nervous system (CNS) disorders and inflammatory pathways.
• Agrochemical Synthesis: Serves as a core scaffold for developing new-generation pesticides and herbicides with specific modes of action.
• Chemical Research & Development: Used in academic and industrial R&D for exploring new heterocyclic chemistry and creating compound libraries for high-throughput screening.
• Active Pharmaceutical Ingredient (API) Manufacturing: Employed in the scaled-up production of specific APIs where its isoxazole-pyrazole structure is integral to biological activity.

Basic Information

Product Name	3-(1-Ethyl-5-Methyl-1H-Pyrazol-4-Yl)-4,5-Dihydro-Isoxazole-5-Carboxylic Acid
CAS No.	957258-38-7
Molecular Formula	C11H15N3O3
Molecular Weight	237.26 g/mol
Synonyms	5-Isoxazolecarboxylic acid, 4,5-dihydro-3-(1-ethyl-5-methyl-1H-pyrazol-4-yl)-; 3-(1-Ethyl-5-methyl-1H-pyrazol-4-yl)-4,5-dihydroisoxazole-5-carboxylic acid; 4,5-Dihydro-3-(1-ethyl-5-methyl-1H-pyrazol-4-yl)-5-isoxazolecarboxylic acid; 957258-38-7; 1H-Pyrazole-4-carboxylic acid, 1-ethyl-5-methyl-, 5-(4,5-dihydro-3-isoxazolyl) deriv.
EINECS	Contact for details

Quality Control

Our production of 3-(1-Ethyl-5-Methyl-1H-Pyrazol-4-Yl)-4,5-Dihydro-Isoxazole-5-Carboxylic Acid adheres to stringent quality management protocols. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation via NMR and IR spectroscopy, to ensure compliance with exacting customer and research-grade specifications. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (typically 15-25°C). Keep away from incompatible materials such as strong oxidizing agents, strong acids, and strong bases.

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 (as Pb)	≤ 10 ppm

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