Description

4-Chloro-2-Methyl-2 H-Pyrazole-3-Carbaldehyde is a versatile pyrazole derivative, a key heterocyclic building block prized for its reactive aldehyde and chloro substituents. This compound matters for its critical role in the synthesis of complex molecules, particularly in the development of advanced agrochemicals and active pharmaceutical ingredients (APIs). It is primarily needed by research chemists and process development teams in the pharmaceutical, agrochemical, and specialty chemical industries for constructing novel molecular scaffolds.

Application

• Pharmaceutical Intermediate: Serves as a crucial precursor in the synthesis of novel drug candidates, particularly those targeting specific enzyme inhibition.
• Agrochemical Synthesis: Used as a key building block for developing new generation herbicides, fungicides, and insecticides with improved efficacy.
• Chemical Research & Development: A valuable reagent for exploring new heterocyclic chemistry and creating libraries of compounds for biological screening.
• Ligand and Catalyst Development: Employed in the preparation of specialized pyrazole-based ligands for metal complexes used in catalysis.
• Material Science Precursor: Can be utilized in the synthesis of organic molecules for advanced materials, such as organic semiconductors or metal-organic frameworks (MOFs).

Basic Information

Product Name	4-Chloro-2-Methyl-2 H-Pyrazole-3-Carbaldehyde
CAS No.	902837-61-0
Molecular Formula	C5H5ClN2O
Molecular Weight	144.56 g/mol
Synonyms	4-Chloro-2-methyl-2H-pyrazole-3-carboxaldehyde; 4-Chloro-2-methyl-1H-pyrazole-3-carbaldehyde; 4-Chloro-2-methyl-1H-pyrazole-3-carboxaldehyde; 3-Formyl-4-chloro-2-methylpyrazole; 4-Chloro-2-methylpyrazole-3-carbaldehyde; 2-Methyl-4-chloropyrazole-3-carboxaldehyde
EINECS	Contact for details

Quality Control

Our 4-Chloro-2-Methyl-2 H-Pyrazole-3-Carbaldehyde is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, NMR, and GC-MS, to ensure high purity and consistency. Certificates of Analysis (COA) detailing identity, purity, and impurity profiles are provided with every shipment to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). This compound is easily oxidized (store under inert atmosphere) and is light-sensitive (store away from light). Keep away from heat, sparks, and open flames.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Conforms to reference standard
Assay (HPLC)	≥ 98.0%
Related Substances (HPLC)	Total impurities ≤ 2.0%
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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