CAS 1633-44-9 appears in our catalog under these names: 3,4–Pyridinedicarbonitrile, Pyridine-3,4-dicarbonitrile, Pyridine-3,4-dicarbonitrile 95%, Pyridine-3,4-dicarbonitrile, 95%, 95%, Pyridine-3,4-dicarbonitrile, 95%. Offered by: GLPBio, Biosynth, Ambeed, Chemat, Fluorochem. Available pack sizes: 1g, 250mg, 2g, 100mg.