Description

2-Pentenenitrile, 2,3-Difluoro-4-Oxo-, (E)- (9Ci) is a specialized fluorinated nitrile building block with the CAS number 91416-71-6. This compound is valued for its unique molecular structure, which combines a reactive nitrile group with fluorine atoms and a ketone functionality, making it a versatile intermediate for advanced chemical synthesis. It is primarily sought by R&D chemists and process development scientists in the pharmaceutical and agrochemical industries for constructing complex, fluorinated target molecules.

Application

• Pharmaceutical Intermediate: A key synthon for the development of novel active pharmaceutical ingredients (APIs), particularly those requiring fluorinated motifs to modulate bioavailability, metabolic stability, and binding affinity.
• Agrochemical Synthesis: Used in the research and production of advanced herbicides, fungicides, and insecticides where the introduction of fluorine atoms enhances product efficacy and environmental profile.
• Advanced Material Precursor: Serves as a building block for specialty polymers, liquid crystals, and electronic chemicals that benefit from the properties imparted by fluorine.
• Organic Synthesis Reagent: Employed in academic and industrial research laboratories for cyclization reactions, nucleophilic additions, and as a precursor for heterocyclic compounds.
• Fluorine Chemistry Research: An important compound for studying structure-activity relationships (SAR) and developing new fluorination methodologies.

Basic Information

Product Name	2-Pentenenitrile, 2,3-Difluoro-4-Oxo-, (E)- (9Ci)
CAS No.	91416-71-6
Molecular Formula	C5H3F2NO
Molecular Weight	131.08 g/mol
Synonyms	(E)-2,3-Difluoro-4-oxopentenenitrile; 2,3-Difluoro-4-oxo-2-pentenenitrile; 4-Oxo-2-pentenenitrile, 2,3-difluoro-, (E)-; 2-Pentenenitrile, 2,3-difluoro-4-oxo-, (E)-; (E)-2,3-Difluoro-4-oxopent-2-enenitrile; 91416-71-6; (E)-2,3-Difluoro-4-oxo-2-pentenentrile
EINECS	Contact for details

Quality Control

Every batch of 2-Pentenenitrile, 2,3-Difluoro-4-Oxo-, (E)- (9Ci) is produced and analyzed under strict quality management protocols to ensure consistency and purity for research and development applications. Our standard quality commitment includes comprehensive analytical characterization. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are provided with each shipment to support your regulatory and development needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (typically 15-25°C). This compound is sensitive to strong alkali and fluoride ions; ensure storage areas are segregated from such materials. For long-term storage, consider maintaining the material under an inert atmosphere to preserve stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC/HPLC)	≥ 95.0% (Area %)
Water Content (KF)	≤ 0.5%
Isomer Content (GC/HPLC)	Reported on COA

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