Description

1H-Pyrazole-5-Carbonyl Chloride, 1-Methyl-3-Propyl- (9Ci) is a specialized heterocyclic building block and key acyl chloride intermediate. This compound matters for its high reactivity, enabling efficient synthesis of amides, esters, and other functionalized pyrazole derivatives critical in advanced chemical development. It is primarily needed by research chemists and process development teams in the pharmaceutical and agrochemical industries for creating novel active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: A key building block for the synthesis of novel drug candidates, particularly those targeting central nervous system (CNS) disorders and metabolic diseases.
• Agrochemical Synthesis: Used in the research and development of new generation herbicides, fungicides, and insecticides with improved efficacy.
• Ligand and Catalyst Development: Serves as a precursor for creating specialized pyrazole-based ligands used in homogeneous catalysis and material science.
• Functional Material Research: Employed in the synthesis of organic compounds for electronic materials, such as organic light-emitting diodes (OLEDs) and semiconductors.
• Custom Synthesis and Contract Manufacturing: A critical reagent for custom synthesis houses and CDMOs (Contract Development and Manufacturing Organizations) producing bespoke compounds for client projects.
• Academic and Industrial R&D: A valuable tool for exploratory chemistry in both university laboratories and corporate R&D centers focusing on heterocyclic chemistry.

Basic Information

Product Name	1H-Pyrazole-5-Carbonyl Chloride, 1-Methyl-3-Propyl- (9Ci)
CAS No.	717871-87-9
Molecular Formula	C8H11ClN2O
Molecular Weight	186.64 g/mol
Synonyms	1-Methyl-3-propyl-1H-pyrazole-5-carbonyl chloride; 1-Methyl-3-propylpyrazole-5-carbonyl chloride; 1-Methyl-3-n-propyl-1H-pyrazole-5-carboxylic acid chloride; 1-Methyl-3-propyl-1H-pyrazole-5-carboxylic acid chloride; 5-Carboxy-1-methyl-3-propylpyrazole chloride; 717871-87-9; 1H-Pyrazole-5-carbonyl chloride, 1-methyl-3-propyl-
EINECS	Contact for details

Quality Control

Our 1H-Pyrazole-5-Carbonyl Chloride, 1-Methyl-3-Propyl- (9Ci) is produced under strict quality management protocols. Each batch undergoes rigorous 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 process chemistry. Certificates of Analysis (COA) detailing batch-specific results are available upon request to support your quality assurance and regulatory documentation.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at a controlled room temperature (15-25°C). Due to its nature as a strong acid/organic solvent derivative and an acid chloride, it must be kept under an inert atmosphere (e.g., nitrogen or argon) to prevent hydrolysis and stored separately from bases and oxidizing agents.

Specification

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

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