Description

(Chloromethylene)Dimethyliminium Chloride is a highly reactive and versatile chemical intermediate, primarily known as a Vilsmeier-Haack reagent. Its core value proposition lies in its exceptional ability to introduce formyl groups into aromatic and heterocyclic compounds, making it indispensable for constructing complex molecular frameworks. This reagent is critically needed by research institutions and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries for the synthesis of active pharmaceutical ingredients (APIs), dyes, and advanced organic materials.

Application

• Pharmaceutical Synthesis: Key reagent in the Vilsmeier-Haack reaction for the formylation of aromatic and heterocyclic compounds to produce drug intermediates and active pharmaceutical ingredients (APIs).
• Agrochemical Manufacturing: Used in the synthesis of complex herbicide and pesticide molecules that require formyl group introduction.
• Dye and Pigment Production: Facilitates the synthesis of advanced dye precursors and colorants through formylation reactions.
• Organic Synthesis Research: A fundamental tool in academic and industrial R&D laboratories for constructing aldehydes from electron-rich arenes.
• Specialty Chemical Intermediates: Employed in the production of fine chemicals, flavors, and fragrances where specific formylated structures are required.
• Material Science: Used in the synthesis of monomers and polymers with specific functional groups for advanced material applications.

Basic Information

Product Name	(Chloromethylene)Dimethyliminium Chloride
CAS No.	3724-43-4
Molecular Formula	C3H7Cl2N
Molecular Weight	128.00 g/mol
Synonyms	Vilsmeier Reagent; N,N-Dimethylchloromethyleneiminium Chloride; Chloromethylenedimethyliminium Chloride; Dimethyl(chloromethylene)ammonium Chloride; Vilsmeier-Haack Reagent; 1-Chloro-N,N-dimethylmethaniminium Chloride; (Dichloromethylidene)dimethylazanium Chloride; Formylating Agent Vilsmeier
EINECS	223-074-1

Quality Control

Our (Chloromethylene)Dimethyliminium Chloride is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure high purity and consistency, meeting the stringent requirements for synthetic applications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment to guarantee traceability and compliance with your specifications.

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). This product is hygroscopic (moisture-sensitive) and light-sensitive; containers must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) to prevent degradation. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or lumps
Identification (IR)	Conforms to structure
Assay (Titration)	≥ 98.0 %
Water Content (KF)	≤ 0.5 %
Melting Point	179 - 184 °C (dec.)
Related Impurities (HPLC)	≤ 1.0 % (total)

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