Description

1-Chloro-5-Methylnaphthalene is a halogenated naphthalene derivative serving as a versatile and valuable synthetic intermediate in advanced organic chemistry. This compound matters for its role in constructing complex molecular architectures, particularly in the development of specialty chemicals and functional materials. Industrial and research chemists in the pharmaceutical, agrochemical, and material science sectors need it for its unique reactivity profile, enabling the synthesis of novel compounds with tailored properties.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of active pharmaceutical ingredients (APIs) and drug candidates, particularly those with naphthalene-based scaffolds.
• Agrochemical Synthesis: Used in the research and production of advanced pesticides, herbicides, and plant growth regulators.
• Material Science Research: Serves as a precursor for organic semiconductors, liquid crystals, and other functional organic materials.
• Dye and Pigment Manufacturing: An intermediate in the production of specialized dyes, pigments, and optical brighteners.
• Organic Synthesis Reagent: Employed in cross-coupling reactions, such as Suzuki or Negishi couplings, to introduce the chloromethylnaphthalene moiety.
• Chemical Research & Development: A valuable tool for academic and industrial R&D in exploring new chemical reactions and pathways.

Basic Information

Product Name	1-Chloro-5-Methylnaphthalene
CAS No.	109962-21-2
Molecular Formula	C₁₁H₉Cl
Molecular Weight	176.64 g/mol
Synonyms	5-Methyl-1-chloronaphthalene; 1-Chloro-5-methylnaphthalene; 1-Chloro-5-methyl-naphthalene; NSC 406903; Chloromethylnaphthalene (isomer); 1-Chloro-5-methyl-naphthalin
EINECS	Contact for details

Quality Control

Our 1-Chloro-5-Methylnaphthalene is manufactured under a strict quality management system to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including chromatography (HPLC/GC) and spectroscopic methods (NMR, IR), to verify identity and purity against established specifications. Certificates of Analysis (COA) documenting all critical quality attributes are provided and available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents, strong bases, and sources of ignition.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details

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