Description

2(3H)-Isothiazolecarboxaldehyde, 4-Methyl-3-Oxo- (9Ci) is a specialized heterocyclic building block featuring a reactive aldehyde group on an isothiazolone core. This compound matters as a versatile synthetic intermediate for constructing complex molecules in advanced research and development. It is primarily needed by pharmaceutical, agrochemical, and material science industries for applications in medicinal chemistry and the synthesis of novel functional materials.

Application

• Pharmaceutical Intermediate: Key building block for the synthesis of novel drug candidates, particularly those targeting infectious diseases or neurological disorders.
• Agrochemical Synthesis: Used in the research and development of new fungicides, herbicides, and plant growth regulators.
• Material Science Research: Serves as a precursor for creating specialized polymers, ligands, or organic electronic materials.
• Chemical Biology Probes: Utilized in the development of activity-based probes or molecular tags for studying biological systems.
• Organic Synthesis: A versatile reagent for constructing complex heterocyclic frameworks in academic and industrial research laboratories.

Basic Information

Product Name	2(3H)-Isothiazolecarboxaldehyde, 4-Methyl-3-Oxo- (9Ci)
CAS No.	42828-70-6
Molecular Formula	C5H5NO2S
Molecular Weight	143.16 g/mol
Synonyms	4-Methyl-3-oxo-2,3-dihydroisothiazole-5-carbaldehyde; 4-Methyl-3-oxo-2,3-dihydroisothiazole-5-carboxaldehyde; 5-Formyl-4-methyl-3-isothiazolone; 4-Methyl-3-oxo-3H-isothiazole-5-carbaldehyde; 4-Methyl-3-oxo-2,3-dihydro-1,2-thiazole-5-carbaldehyde; 4-Methyl-3-oxoisothiazole-5-carboxaldehyde; 5-Aldehyde-4-methyl-3-isothiazolone
EINECS	Contact for details

Quality Control

Our 2(3H)-Isothiazolecarboxaldehyde, 4-Methyl-3-Oxo- (9Ci) is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing to ensure high purity and consistency, meeting the stringent requirements for research and process development. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at room temperature (15-25°C). This material is easily oxidized (store under inert atmosphere) and is light-sensitive (store away from light). Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Off-white to pale yellow crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Melting Point	Contact for details
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.