Description

Carbonic Acid, Monoanhydride With 5-Methyl-3-Phenyl-4-Isoxazolecarboxylic Acid, Ethyl Ester (8Ci) is a specialized organic compound that serves as a key synthetic intermediate in advanced chemical manufacturing. Its unique molecular architecture, featuring fused isoxazole and ester functionalities, makes it a valuable building block for creating complex heterocyclic systems. This high-purity intermediate is primarily sought by research institutions and industrial R&D departments engaged in the development of novel active pharmaceutical ingredients (APIs) and agrochemicals.

Application

• Pharmaceutical Intermediate: A critical precursor in the synthesis of novel drug candidates, particularly those targeting neurological or inflammatory pathways.
• Agrochemical Research: Used in the development of next-generation herbicides and fungicides, leveraging its heterocyclic core for bioactivity.
• Organic Synthesis Building Block: Employed in academic and industrial laboratories for constructing complex molecules for material science and catalysis research.
• Chemical Reference Standard: Serves as a high-purity analytical standard for quality control and method development in analytical chemistry.

Basic Information

Product Name	Carbonic Acid, Monoanhydride With 5-Methyl-3-Phenyl-4-Isoxazolecarboxylic Acid, Ethyl Ester (8Ci)
CAS No.	23891-89-6
Molecular Formula	C14H13NO5
Molecular Weight	275.26 g/mol
Synonyms	5-Methyl-3-phenyl-4-isoxazolecarboxylic acid ethyl ester carbonic anhydride; Ethyl 5-methyl-3-phenyl-4-isoxazolecarboxylate mixed anhydride with carbonic acid; 4-Isoxazolecarboxylic acid, 5-methyl-3-phenyl-, ethyl ester, monoanhydride with carbonic acid; 23891-89-6; UNII-9F8K7V3V8C; 9F8K7V3V8C; SCHEMBL2330621
EINECS	Contact for details

Quality Control

Our production of Carbonic Acid, Monoanhydride With 5-Methyl-3-Phenyl-4-Isoxazolecarboxylic Acid, Ethyl Ester (8Ci) adheres to stringent quality protocols to ensure batch-to-batch consistency and high purity for research and synthesis applications. Each lot is characterized using advanced analytical techniques including HPLC, NMR, and mass spectrometry. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment to support your quality assurance and regulatory documentation.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after each use to prevent degradation from atmospheric moisture. Keep away from heat and incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Single Unknown Impurity (HPLC)	≤ 1.0%
Total Impurities (HPLC)	≤ 3.0%

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