Description

4-Isoxazolecarboxylic Acid, 3-[[(1,1-Dimethylethoxy)Carbonyl]Amino]-5-Methyl- is a high-value, protected amino acid derivative featuring an isoxazole heterocycle, serving as a critical synthetic intermediate in advanced organic chemistry. Its core value lies in enabling the controlled synthesis of complex molecules, particularly in the development of novel active pharmaceutical ingredients (APIs) and agrochemicals. This compound is essential for research and production chemists in the pharmaceutical, agrochemical, and specialty chemical industries who require a reliable source of high-purity building blocks for drug discovery and process development.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of novel drug candidates, particularly those targeting neurological disorders, inflammation, and infectious diseases.
• Agrochemical Synthesis: Used in the research and development of next-generation herbicides, fungicides, and insecticides, leveraging the bioactive isoxazole scaffold.
• Peptidomimetics & PROTACs: Serves as a constrained amino acid analog in the design of peptide mimics and Proteolysis-Targeting Chimeras (PROTACs) for targeted protein degradation.
• Chemical Biology Probes: Employed in the creation of molecular probes to study enzyme function and biological pathways due to its modifiable carboxylic acid and protected amine groups.
• Material Science Research: Investigated as a monomer or functional additive for creating polymers with specific thermal or optical properties.
• Academic & Industrial R&D: A versatile reagent for method development and exploring new chemical reactions in synthetic organic chemistry laboratories.

Basic Information

Product Name	4-Isoxazolecarboxylic Acid, 3-[[(1,1-Dimethylethoxy)Carbonyl]Amino]-5-Methyl-
CAS No.	913535-49-6
Molecular Formula	C10H14N2O5
Molecular Weight	242.23 g/mol
Synonyms	3-[(tert-Butoxycarbonyl)amino]-5-methylisoxazole-4-carboxylic acid; 5-Methyl-3-[(tert-butoxycarbonyl)amino]isoxazole-4-carboxylic acid; Boc-3-Amino-5-methylisoxazole-4-carboxylic acid; tert-Butyl (5-methyl-4-carboxyisoxazol-3-yl)carbamate; 3-(Boc-amino)-5-methylisoxazole-4-carboxylic acid; 913535-49-6; (3-((tert-Butoxycarbonyl)amino)-5-methylisoxazol-4-yl)formic acid
EINECS	Contact for details

Quality Control

Our production of 4-Isoxazolecarboxylic Acid, 3-[[(1,1-Dimethylethoxy)Carbonyl]Amino]-5-Methyl- adheres to stringent quality management protocols. Each batch undergoes comprehensive analytical testing, including HPLC for purity, NMR and IR for structural confirmation, and KF titration for moisture content, to ensure it meets the exacting standards required for pharmaceutical and advanced synthetic applications. Certificates of Analysis (COA) with full traceability are provided for 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 product is hygroscopic (moisture-sensitive); ensure the container is sealed immediately after use to prevent degradation from atmospheric moisture. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Water Content (KF)	≤ 1.0%
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.