CAS 631-57-2 appears in our catalog under these names: Pyruvonitrile (>90%), Pyruvonitrile, Pyruvonitrile, tech. 90% , PYRUVONITRILE, 90%, Acetyl cyanide, 90%,RG. Offered by: TRC, GLPBio, Thermo Scientific (Alfa Aesar), Sigma-Aldrich, Fluorochem. Available pack sizes: 100mg, 1g, 500mg, 5g, 25G.