Description

2,5-Cyclohexadiene-1-Carbonyl Chloride, 1-Methyl- (9Ci) is a specialized organic intermediate featuring a reactive acid chloride group on a substituted cyclohexadiene ring. This compound matters for its role as a key building block in the synthesis of complex molecules, particularly in pharmaceutical and advanced material research. It is primarily needed by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and specialty chemical industries for constructing novel molecular architectures.

Application

• Pharmaceutical Intermediate: Serves as a crucial precursor in the synthesis of active pharmaceutical ingredients (APIs), especially for compounds requiring a functionalized cyclohexadiene scaffold.
• Agrochemical Synthesis: Used in the research and development of novel herbicides, fungicides, and plant growth regulators.
• Material Science Research: Acts as a monomer or cross-linking agent in the development of specialty polymers and advanced organic materials.
• Organic Synthesis Reagent: Employed in academic and industrial laboratories for Friedel-Crafts acylation, amide coupling, and other nucleophilic substitution reactions to introduce the carbonyl moiety.
• Ligand and Catalyst Development: Utilized for the preparation of novel ligands and organometallic complexes for catalytic applications.
• Fine Chemical Production: Integral to the multi-step synthesis of complex fragrance, flavor, and dye molecules.

Basic Information

Product Name	2,5-Cyclohexadiene-1-Carbonyl Chloride, 1-Methyl- (9Ci)
CAS No.	85215-58-3
Molecular Formula	C8H9ClO
Molecular Weight	156.61 g/mol
Synonyms	1-Methyl-2,5-cyclohexadiene-1-carbonyl chloride; 1-Methyl-1,4-cyclohexadiene-1-carbonyl chloride; 1-Methyl-δ1,4-cyclohexadiene-1-carbonyl chloride; 1-Methyl-1,4-dihydrobenzoyl chloride (tautomer); 3-Methyl-2,5-cyclohexadiene-1-carbonyl chloride; Toluoyl chloride, α,3-cyclohexadien-5-yl- (related structure); Contact for additional synonyms.
EINECS	Contact for details

Quality Control

Our 2,5-Cyclohexadiene-1-Carbonyl Chloride, 1-Methyl- (9Ci) is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing, including chromatography and spectroscopy, to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing batch-specific results 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. Due to its hygroscopic and moisture-sensitive nature, containers should be kept sealed under an inert atmosphere (e.g., nitrogen or argon) and allowed to reach room temperature before opening to prevent condensation. Recommended storage temperature is 2-8°C for long-term stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Water Content (KF)	≤ 0.5%

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