Description

3-Phenyl-4-Isothiazolecarboxylic Acid Methyl Ester is a versatile heterocyclic building block of significant interest in advanced organic synthesis. This compound matters for its role as a key intermediate in the development of pharmaceuticals and agrochemicals, particularly those targeting specific biological pathways. It is primarily needed by research institutions and industrial manufacturers engaged in the synthesis of novel active ingredients, where its unique isothiazole-phenyl scaffold is highly valued.

Application

• Pharmaceutical Intermediate: A crucial precursor in the synthesis of novel drug candidates, particularly for central nervous system (CNS) and anti-inflammatory targets.
• Agrochemical Research: Serves as a key building block for developing new fungicides and herbicides with enhanced efficacy.
• Material Science: Used in the research and development of specialty polymers and advanced organic electronic materials.
• Chemical Synthesis: Acts as a versatile synthon for constructing complex heterocyclic compounds in academic and industrial R&D laboratories.
• Bioconjugation & Probe Development: Utilized in the creation of biochemical probes and labeling reagents for diagnostic applications.

Basic Information

Product Name	3-Phenyl-4-Isothiazolecarboxylic Acid Methyl Ester
CAS No.	21905-48-6
Molecular Formula	C11H9NO2S
Molecular Weight	219.26 g/mol
Synonyms	Methyl 3-phenyl-1,2-thiazole-4-carboxylate; Methyl 3-phenylisothiazole-4-carboxylate; 3-Phenylisothiazole-4-carboxylic acid methyl ester; 4-Carbomethoxy-3-phenylisothiazole; 3-Phenyl-4-isothiazolecarboxylic acid, methyl ester; 3-Phenyl-4-methoxycarbonylisothiazole; 21905-48-6
EINECS	Contact for details

Quality Control

Our 3-Phenyl-4-Isothiazolecarboxylic Acid Methyl Ester is produced under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, NMR, and GC-MS, to ensure high purity and batch-to-batch consistency. Certificates of Analysis (COA) detailing all specifications are 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, and well-ventilated place at room temperature (15-25°C). Keep away from heat sources and incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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