Description

2-(4-Chloro-1H-Pyrazol-1-Yl)Butanohydrazide is a specialized heterocyclic building block of significant interest in advanced organic synthesis. Its core value lies in its bifunctional structure, combining a reactive hydrazide moiety with a halogenated pyrazole ring, making it a versatile intermediate for constructing complex molecular architectures. This compound is primarily needed by R&D chemists and process development scientists in the pharmaceutical and agrochemical industries for the development of novel active ingredients.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of potential drug candidates, particularly those targeting central nervous system (CNS) disorders, inflammation, or infectious diseases.
• Agrochemical Synthesis: Serves as a critical building block for developing new-generation herbicides, fungicides, or insecticides with novel modes of action.
• Ligand and Chelator Development: Utilized in research for creating novel ligands in coordination chemistry or metal-organic frameworks (MOFs).
• Material Science Research: Employed in the synthesis of functional polymers or organic electronic materials due to its electron-deficient pyrazole unit.
• Chemical Biology Probes: Used to develop activity-based probes or molecular tags for studying biological processes.
• Custom Synthesis and Contract Manufacturing: Supplied to CDMOs (Contract Development and Manufacturing Organizations) for client-specific synthesis projects requiring high-purity advanced intermediates.

Basic Information

Product Name	2-(4-Chloro-1H-Pyrazol-1-Yl)Butanohydrazide
CAS No.	1005699-87-5
Molecular Formula	C7H11ClN4O
Molecular Weight	202.64 g/mol
Synonyms	Butanohydrazide, 2-(4-chloro-1H-pyrazol-1-yl)-; 2-(4-Chloro-1H-pyrazol-1-yl)butanehydrazide; 4-Chloro-1-(1-hydrazinyl-1-oxobutan-2-yl)-1H-pyrazole; 2-(4-Chloropyrazol-1-yl)butyric acid hydrazide; 1-(1-Hydrazinyl-1-oxobutan-2-yl)-4-chloro-1H-pyrazole; 4-Chloro-1-(2-hydrazinyl-2-oxoethyl)pyrazole (common misnomer); 1005699-87-5 (CAS Registry Number)
EINECS	Contact for details

Quality Control

Our 2-(4-Chloro-1H-Pyrazol-1-Yl)Butanohydrazide is manufactured under strict quality management systems. 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 provided with every shipment.

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 sensitivity to oxidation, it is recommended to store under an inert atmosphere (e.g., nitrogen or argon) for long-term preservation. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm

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