Description

3H-Pyrazol-3-One,5-Butyl-4-Fluoro-1,2-Dihydro-(9Ci) is a fluorinated pyrazolone derivative, a specialized heterocyclic building block of significant interest in advanced organic synthesis. Its core value lies in its unique molecular scaffold, which combines a reactive pyrazolone core with fluorine and butyl substituents, enabling precise modulation of physicochemical properties in target molecules. This compound is primarily needed by research and development chemists in the pharmaceutical and agrochemical industries for the development of new active ingredients, where it serves as a key intermediate for creating compounds with enhanced bioactivity, metabolic stability, and selectivity.

Application

• Pharmaceutical Intermediate: A crucial building block for synthesizing novel drug candidates, particularly in medicinal chemistry programs targeting central nervous system (CNS) disorders, inflammation, and metabolic diseases.
• Agrochemical Research: Used in the development of new-generation herbicides, fungicides, and insecticides, where the fluorine atom can improve lipophilicity and membrane permeability.
• Chemical Biology Probe Synthesis: Serves as a scaffold for creating molecular probes to study enzyme function and biological pathways in academic and industrial research settings.
• Material Science Precursor: Potential use in the synthesis of specialty polymers or organic electronic materials that require specific heterocyclic structures for performance tuning.
• Custom Synthesis & Contract Manufacturing: Supplied to CDMOs (Contract Development and Manufacturing Organizations) for client-specific synthesis projects requiring this precise fluorinated heterocycle.

Basic Information

Product Name	3H-Pyrazol-3-One,5-Butyl-4-Fluoro-1,2-Dihydro-(9Ci)
CAS No.	319459-73-9
Molecular Formula	C7H11FN2O
Molecular Weight	158.17 g/mol
Synonyms	5-Butyl-4-fluoro-1,2-dihydro-3H-pyrazol-3-one; 4-Fluoro-5-butyl-1,2-dihydro-3H-pyrazol-3-one; 5-Butyl-4-fluoro-2,3-dihydro-1H-pyrazol-3-one; 319459-73-9; 5-butyl-4-fluoro-1H-pyrazol-3(2H)-one; 5-Butyl-4-fluoro-1,2-dihydropyrazol-3-one; Fluorinated pyrazolone derivative; Butylfluoropyrazolone
EINECS	Contact for details

Quality Control

Our 3H-Pyrazol-3-One,5-Butyl-4-Fluoro-1,2-Dihydro-(9Ci) is produced under strict quality management protocols to ensure batch-to-batch consistency and high purity, essential for sensitive R&D and scale-up processes. We provide comprehensive Certificates of Analysis (COA) with each batch, detailing purity, identity, and impurity profiles. Our quality systems are designed to support cGMP (current Good Manufacturing Practice) compliance for pharmaceutical intermediate applications, and we can accommodate custom purity specifications upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Keep the container tightly sealed in a dry environment to minimize exposure to moisture. Store away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 10 ppm
Single Unknown Impurity (HPLC)	≤ 0.5%
Total Impurities (HPLC)	≤ 2.0%

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