Description

(Z)-4-Fluoroazobenzene CAS NO 331-99-7 is a high-purity, isomerically defined fluorinated azobenzene derivative, valued for its role as a critical building block in advanced materials and life science research. Its precise molecular structure, featuring a fluorine substituent in the *para* position, makes it an essential component for tuning the photophysical and electronic properties of functional molecules. This compound is primarily sought by R&D chemists and material scientists in the fields of photopharmacology, molecular switches, liquid crystals, and organic electronics.

Application

• Photopharmacology & Optogenetics: Serves as a key photoswitchable core for developing light-activated drugs and probes.
• Molecular Switches & Machines: Used in the synthesis of advanced molecular systems that change conformation upon light irradiation.
• Liquid Crystal & Polymer Research: Acts as a dopant or monomer to modify the phase behavior and optical properties of liquid crystalline materials and functional polymers.
• Organic Electronics: Employed as a building block for organic semiconductors and non-linear optical (NLO) materials.
• Chemical Biology: Utilized to create photo-controllable enzymes, receptors, and other biomolecules for mechanistic studies.
• Dye & Pigment Intermediate: Functions as a precursor for specialized azo dyes and pigments with enhanced stability or color properties.
• Academic & Industrial R&D: A fundamental research chemical for exploring structure-property relationships in photochromic compounds.

Basic Information

Product Name	(Z)-4-Fluoroazobenzene
CAS No.	331-99-7
Molecular Formula	C₁₂H₉FN₂
Molecular Weight	200.21 g/mol
Synonyms	4-Fluoroazobenzene (Z-isomer); (Z)-1-Fluoro-4-(phenyldiazenyl)benzene; cis-4-Fluoroazobenzene; Azobenzene, 4'-fluoro-, (Z)-; 4-Fluoro-(Z)-azobenzene; (Z)-p-Fluoroazobenzene; (cis)-4-Fluoroazobenzene; Light-sensitive azobenzene derivative
EINECS	Contact for details

Quality Control

Every batch of our (Z)-4-Fluoroazobenzene is synthesized and purified under controlled conditions to ensure high isomeric purity and chemical integrity. Our products undergo rigorous quality testing, including HPLC, NMR, and GC-MS analysis, to ensure compliance with stringent research and development standards. Comprehensive Certificates of Analysis (COA) detailing purity, isomer ratio, and impurity profiles are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). Due to its light-sensitive nature, prolonged exposure to light should be avoided to prevent potential isomerization or degradation.

Specification

Item	Specification
Appearance	Yellow to orange crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0% (Area%)
(Z)-Isomer Content (HPLC)	≥ 95.0%
Melting Point	Contact for details
Heavy Metals	< 20 ppm
Residual Solvents (GC)	Complies with ICH guidelines

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