CAS 14918-21-9 appears in our catalog under these names: 5-Hexynenitrile, 98% , 5-Hexynenitrile, 98%, 5-Hexynenitrile 98%, 5-HEXYNENITRILE, 97%, 5-Cyano-1-pentyne, 99.30%. Offered by: Thermo Scientific (Alfa Aesar), Thermo Scientific (Acros), Ambeed, Sigma-Aldrich, MedChemExpress. Available pack sizes: 1g, 5g, 100g, 250mg, 25g, 10 g, 500 mg, 1 g.