CAS: 99-34-3 EC No: 202-751-1 MDL No: MFCD00007253 RTECS: DG9140700 UN No: UN1325; Haz Class: 4.1; Packing Group: III Solid Molecular Formula: C₇H₄N₂O₆ MW: 212.12 Melting Point: 204-206°