Description

Benzoyl Chloride, 4-Hydroxy-3,5-Dimethyl- (9Ci) is a specialized benzoyl chloride derivative, distinguished by the presence of hydroxy and dimethyl substituents on the aromatic ring. This functionalization makes it a valuable high-purity intermediate for synthesizing more complex molecules where steric and electronic properties are critical. It is primarily sought by pharmaceutical, agrochemical, and advanced material research sectors for the development of active ingredients, UV stabilizers, and specialty polymers.

Application

• Pharmaceutical Intermediate: Key building block for the synthesis of novel active pharmaceutical ingredients (APIs), particularly in antimicrobial and anti-inflammatory drug research.
• Agrochemical Synthesis: Used in the production of advanced herbicides and fungicides, where its substituted benzoyl structure contributes to biological activity.
• Polymer & Material Science: Serves as a monomer or cross-linking agent in the manufacture of specialty polymers, coatings, and liquid crystal materials.
• UV Stabilizer Production: Acts as a precursor in the synthesis of benzophenone-type UV absorbers used in plastics and coatings.
• Dye & Pigment Intermediate: Employed in the synthesis of high-performance dyes and organic pigments.
• Organic Synthesis Reagent: A versatile reagent for introducing the benzoyl group in complex organic molecules under controlled conditions.

Basic Information

Item	Details
Product Name	Benzoyl Chloride, 4-Hydroxy-3,5-Dimethyl- (9Ci)
CAS No.	42293-38-9
Molecular Formula	C9H9ClO2
Molecular Weight	184.62 g/mol
Synonyms	4-Hydroxy-3,5-dimethylbenzoyl chloride; 3,5-Dimethyl-4-hydroxybenzoyl chloride; 2,6-Dimethyl-4-(chlorocarbonyl)phenol; 4-(Chlorocarbonyl)-2,6-dimethylphenol; 2,6-Dimethyl-4-hydroxybenzoyl chloride; 4-Hydroxy-3,5-dimethylbenzoic acid chloride
EINECS	Contact for details

Quality Control

Our Benzoyl Chloride, 4-Hydroxy-3,5-Dimethyl- (9Ci) is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC, GC, and NMR, to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing all specifications are provided with every shipment. We can support development and production needs across various purity grades, from technical to high-purity research standards.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). This compound is hygroscopic (moisture-sensitive) and a strong acid/organic solvent; ensure containers are kept tightly sealed to exclude moisture and stored separately from bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Related Substances (HPLC)	Total impurities ≤ 2.0%

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