Description

4-Oxazolecarboxylic Acid, 4,5-Dihydro-, Methyl Ester (9Ci) is a versatile heterocyclic building block and ester derivative of dihydrooxazole. This compound is valued for its role as a key synthetic intermediate in the production of more complex molecules, particularly in pharmaceutical research and fine chemical synthesis. It is primarily sought by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and specialty chemical industries for constructing novel molecular scaffolds.

Application

• Pharmaceutical Intermediate: A crucial building block for the synthesis of active pharmaceutical ingredients (APIs) and novel drug candidates, particularly those containing oxazole or dihydrooxazole motifs.
• Agrochemical Synthesis: Used in the research and development of new pesticides, herbicides, and fungicides where the oxazole ring system imparts specific biological activity.
• Fine Chemical Production: Serves as a precursor in the manufacture of complex specialty chemicals, including dyes, pigments, and advanced materials.
• Academic & Industrial Research: Employed in organic chemistry research for method development, catalysis studies, and the exploration of new heterocyclic compounds.
• Ligand and Catalyst Development: The oxazole structure can be functionalized to create novel ligands for metal complexes and organocatalysts.

Basic Information

Product Name	4-Oxazolecarboxylic Acid, 4,5-Dihydro-, Methyl Ester (9Ci)
CAS No.	58861-77-1
Molecular Formula	C5H7NO3
Molecular Weight	129.11 g/mol
Synonyms	2,3-Dihydro-1,3-oxazole-4-carboxylic acid methyl ester; Methyl 4,5-dihydro-1,3-oxazole-4-carboxylate; Methyl 2,3-dihydro-1,3-oxazole-4-carboxylate; 4,5-Dihydrooxazole-4-carboxylic acid methyl ester; 4-Carbomethoxy-4,5-dihydrooxazole; Methyl dihydrooxazole-4-carboxylate; 4-Methoxycarbonyl-4,5-dihydrooxazole
EINECS	Contact for details

Quality Control

Our 4-Oxazolecarboxylic Acid, 4,5-Dihydro-, Methyl Ester (9Ci) is produced under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing specifications and results are provided and available upon request to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent degradation from atmospheric moisture. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Water Content (KF)	≤ 1.0%
Residue on Ignition	≤ 0.1%

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