3,5-Diethynylpyridine

• CAT Number: L039515
• CAS Number: 67227-90-1
• Molecular Formula: C9H5N
• Molecular Weight: 127.14
• Purity: ≥95%
• IUPAC Name: 3,5-diethynylpyridine
• InChI: InChI=1S/C9H5N/c1-3-8-5-9(4-2)7-10-6-8/h1-2,5-7H
• InChIKey: VERYSOHHELIELQ-UHFFFAOYSA-N
• SMILES: C#CC1=CC(=CN=C1)C#C

3,5-Diethynylpyridine（Cat No.:L039515）is a heteroaromatic compound with the molecular formula C9H5N. It features a pyridine ring substituted with ethynyl groups (–C≡CH) at the 3- and 5-positions. This structure offers a linear, rigid framework with conjugated π-systems, making it valuable in the synthesis of advanced materials, including conjugated polymers, molecular electronics, and coordination complexes. The terminal alkynes are reactive sites for cross-coupling reactions such as Sonogashira coupling. Typically a light-colored solid, it requires careful handling under inert conditions due to sensitivity to air and light. Store in a cool, dry place.