CAS 171290-53-2 appears in our catalog under these names: 3-Ethynyl-benzonitrile, 98%, 3-Ethynylbenzonitrile 98%, 3-Ethynylbenzonitrile, 98%, 98%, 3-Ethynylbenzonitrile, 95%. Offered by: Combi-blocks, Ambeed, Chemat, Fluorochem. Available pack sizes: 250mg, 5g, 10g, 1g, 100mg, 25g.