CAS 1589-62-4 appears in our catalog under these names: Cyclohexanone-2,4-dinitrophenylhydrazone, Cyclohexanone 2，4–dinitrophenylhydrazone, Cyclohexanone 2,4-dinitrophenylhydrazone, 99% , CYCLOHEXANONE 2,4-DINITROPHENYLHYDRAZON&, 1-Cyclohexylidene-2-(2,4-dinitrophenyl)hydrazine, 98%, 98%. Offered by: Dr. Ehrenstorfer, GLPBio, Thermo Scientific (Alfa Aesar), Sigma-Aldrich, Chemat. Available pack sizes: 100mg, 1g, 5g, 25g, 250mg, 500mg.