Description

5-Isothiazolecarboxaldehyde, 3-Methoxy- (9Ci) is a specialized heterocyclic aldehyde building block of significant interest in advanced organic synthesis. Its core value lies in its unique molecular architecture, which serves as a versatile precursor for constructing complex molecules, particularly in pharmaceutical and agrochemical research. This compound is essential for R&D chemists and process development scientists working on novel active ingredients, including potential pharmaceuticals, crop protection agents, and functional materials.

Application

• Pharmaceutical Intermediate: A key synthon for the development of novel drug candidates, particularly in medicinal chemistry programs targeting new therapeutic agents.
• Agrochemical Synthesis: Used in the research and production of advanced pesticides, herbicides, and fungicides due to its reactive aldehyde and heterocyclic functionalities.
• Organic Synthesis Building Block: Serves as a versatile precursor for synthesizing complex heterocyclic compounds, ligands, and functionalized materials in academic and industrial laboratories.
• Chemical Research & Development: Employed in exploratory chemistry for creating new molecular libraries and screening for biological activity.
• Material Science Applications: Potential use in the synthesis of specialty polymers, dyes, or photoactive materials where the isothiazole core imparts specific properties.

Basic Information

Product Name	5-Isothiazolecarboxaldehyde, 3-Methoxy- (9Ci)
CAS No.	300768-05-2
Molecular Formula	C5H5NO2S
Molecular Weight	143.16 g/mol
Synonyms	3-Methoxyisothiazole-5-carboxaldehyde; 3-Methoxy-1,2-thiazole-5-carbaldehyde; 5-Formyl-3-methoxyisothiazole; 3-Methoxy-5-isothiazolecarbaldehyde; 3-Methoxyisothiazole-5-carbaldehyde; 5-Carbaldehyde-3-methoxyisothiazole
EINECS	Contact for details

Quality Control

We maintain stringent quality control protocols for our chemical intermediates. Each batch of 5-Isothiazolecarboxaldehyde, 3-Methoxy- is analyzed using advanced techniques like HPLC, GC, and NMR to ensure identity, purity, and consistency. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with every shipment. Our quality system is designed to support cGMP and ISO standards for reliable supply to regulated industries.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) in a cool, dry, and well-ventilated place. Recommended long-term storage temperature is 2-8°C. Allow the container to reach ambient temperature before opening to minimize moisture ingress. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 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.