CAS: 66-22-8 EC No: 200-621-9 MDL No: MFCD00006016 RTECS: YQ8650000 Powder Molecular Formula: C₄H₄N₂O₂ MW: 112.09 Melting Point: >300°

CAS: 58-61-7 EC No: 200-389-9 MDL No: MFCD00005752 RTECS: AU7175000 Solid Molecular Formula: C₁₀H₁₃N₅O₄ MW: 267.24 Melting Point: 234-236°