High quality 1-Methylamino-2-methoxycyclobutenedione White 

3-methoxy-4-(methylamino)cyclobut-3-ene-1,2-dione is a white solid commonly used as a pharmaceuticals and dye intermediate. It can be obtained by transesterification of p-toluenesulfonamide and methyl formate.  English name: 3-methoxy-4-(methylamino)cyclobut-3-ene-1,2-dione English alias: 1-methylamino-2-methoxycyclobutene-3,4-dione; 1-methylamino-2-methoxycyclobutenedione; CAS NO. 63649-29-6 Molecular weight: 141.12500 Molecular formula: C6H7NO3 Boiling point: 254.4±50.0 °C(Predicted) Density: 1.27±0.1 g/cm3(Predicted)