CAS 2571-00-8 appears in our catalog under these names: p-Tolualdehyd-2,4-dinitrophenylhydrazone, p–Tolualdehyde 2，4–Dinitrophenylhydrazone, p-Tolualdehyde 2,4-Dinitrophenylhydrazone, >98.0%(T)(HPLC), (E)-1-(2,4-dinitrophenyl)-2-(4-methylbenzylidene)hydrazine, p-Tolualdehyde-DNPH. Offered by: Dr. Ehrenstorfer, GLPBio, TCI, Chemat, HPC Standards. Available pack sizes: 100mg, 1g, 5g, 10g, 1x100mg, 1x10ml, 1x1ml.