Description

(4E)-4-[2-(4-Fluorophenyl)Hydrazinylidene]-2,5-Diphenyl-2,4-Dihydro-3H-Pyrazol-3-One is a high-purity, specialized pyrazolone derivative with a defined hydrazinylidene structure. This compound serves as a critical advanced pharmaceutical intermediate and a versatile organic synthesis building block for research and development. It is primarily required by fine chemical manufacturers and R&D laboratories in the pharmaceutical, agrochemical, and material science sectors for synthesizing novel active compounds.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of novel drug candidates, particularly those targeting specific enzyme inhibition or receptor modulation.
• Agrochemical Research: Used as a building block for developing new active ingredients in herbicides, fungicides, or plant growth regulators.
• Organic Synthesis Reagent: Serves as a versatile synthon for constructing complex heterocyclic frameworks in academic and industrial research.
• Material Science Precursor: Potential intermediate for the development of organic electronic materials or specialty dyes and pigments.
• Chemical Reference Standard: Used for analytical method development, validation, and quality control in regulatory and research settings.

Basic Information

Product Name	(4E)-4-[2-(4-Fluorophenyl)Hydrazinylidene]-2,5-Diphenyl-2,4-Dihydro-3H-Pyrazol-3-One
CAS No.	331719-58-5
Molecular Formula	C21H15FN4O
Molecular Weight	358.37 g/mol
Synonyms	4-[(E)-2-(4-Fluorophenyl)hydrazinylidene]-2,5-diphenyl-2,4-dihydro-3H-pyrazol-3-one; 4-[(E)-[2-(4-Fluorophenyl)hydrazinylidene]methyl]-2,5-diphenyl-2H-pyrazol-3-ol; 4-(2-(4-Fluorophenyl)hydrazono)-2,5-diphenyl-2,4-dihydro-3H-pyrazol-3-one; (4E)-4-[(4-Fluorophenyl)hydrazono]-2,5-diphenyl-2,4-dihydro-3H-pyrazol-3-one; 4-(4-Fluorophenylhydrazono)-2,5-diphenyl-2H-pyrazol-3-ol; 331719-58-5; 4-(4-Fluorophenylazo)-2,5-diphenyl-2H-pyrazol-3-ol (tautomeric form)
EINECS	Contact for details

Quality Control

Our (4E)-4-[2-(4-Fluorophenyl)Hydrazinylidene]-2,5-Diphenyl-2,4-Dihydro-3H-Pyrazol-3-One is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, NMR, and MS, to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing all specifications are provided and can be tailored to meet specific client or regulatory requirements.

Storage

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

Specification

Item	Specification
Appearance	Yellow to orange crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Conforms to reference standard
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.