Description

Diphenylacetylene is a versatile organic building block and a key intermediate in organic synthesis, valued for its rigid, linear structure and alkyne functionality. Its primary commercial importance lies in its role as a precursor for pharmaceuticals, agrochemicals, and advanced materials through cross-coupling and cycloaddition reactions. This compound is essential for R&D chemists and production units in the pharmaceutical, fine chemical, and material science industries seeking to construct complex molecular architectures.

Application

• Pharmaceutical Intermediate: A crucial precursor in the synthesis of active pharmaceutical ingredients (APIs) and drug candidates, particularly those containing stilbene or polyaromatic structures.
• Agrochemical Synthesis: Used in the production of advanced pesticides, herbicides, and fungicides where its aromatic rings contribute to biological activity.
• Material Science & OLEDs: Serves as a building block for conjugated polymers, liquid crystals, and organic light-emitting diode (OLED) materials due to its electron-transport properties and rigid backbone.
• Ligand & Catalyst Preparation: Employed in the synthesis of specialized ligands for transition metal catalysis, including those used in Sonogashira and other cross-coupling reactions.
• Academic & Industrial R&D: A standard reagent in research laboratories for studying alkyne chemistry, [2+2] cycloadditions, and the preparation of novel polycyclic aromatic hydrocarbons.
• Fine Chemical Production: Utilized in the manufacture of dyes, pigments, and specialty chemicals requiring a diphenylacetylene core.

Basic Information

Product Name	Diphenylacetylene
CAS No.	501-65-5
Molecular Formula	C14H10
Molecular Weight	178.23 g/mol
Synonyms	Tolan; 1,2-Diphenylethyne; Diphenylethyne; Benzene, 1,1'-(1,2-ethynediyl)bis-; Ethyne, diphenyl-; Biphenylacetylene; Tolane
EINECS	207-924-5

Quality Control

Our Diphenylacetylene CAS NO 501-65-5 is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including HPLC, GC, and NMR, to ensure high purity and consistency. We provide full traceability and a detailed Certificate of Analysis (COA) with each shipment, confirming compliance with agreed specifications. Our quality commitment supports applications in regulated environments.

Storage

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

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	60 - 63 °C
Loss on Drying	≤ 0.5%

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