Description

1-Chloro-4-Methylphthalazine is a versatile heterocyclic building block of significant importance in advanced organic synthesis. Its unique structure, featuring both a chloro and a methyl substituent on the phthalazine core, makes it a critical intermediate for constructing complex molecules. This compound is primarily sought after by research and development chemists in the pharmaceutical and agrochemical industries for the development of new active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of novel drug candidates, particularly those targeting central nervous system (CNS) disorders and oncology.
• Agrochemical Synthesis: Used in the research and development of new herbicides, fungicides, and insecticides, leveraging its heterocyclic scaffold.
• Material Science Research: Serves as a building block for creating specialized organic ligands, dyes, and photoactive materials.
• Chemical Biology Probes: Employed in the design and synthesis of molecular probes for studying enzyme mechanisms and biological pathways.
• Academic & Contract Research: Essential for methodological development and exploratory synthesis in university and CRO laboratory settings.

Basic Information

Product Name	1-Chloro-4-Methylphthalazine
CAS No.	19064-68-7
Molecular Formula	C9H7ClN2
Molecular Weight	178.62 g/mol
Synonyms	4-Methyl-1-chlorophthalazine; 1-Chloro-4-methyl-2,3-diazanaphthalene; NSC 403119; Phthalazine, 1-chloro-4-methyl-; 1-Chloro-4-methylphthalazine
EINECS	Contact for details

Quality Control

Our 1-Chloro-4-Methylphthalazine is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation via NMR and IR spectroscopy, to ensure it meets the high standards required for research and development applications. A detailed Certificate of Analysis (COA) is provided with every shipment.

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 should be handled under dry conditions to maintain stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Melting Point	Contact for details
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%

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