sodium 3-[(1,4,5,6-tetrahydro-4,6-dioxo-1,3,5-triazin-2-yl)amino]benzenesulphonate

3-[[(1,4,5,6-Tetrahydro-4,6-dioxo-1,3,5-triazin)-2-yl]amino]benzenesulfonic acid sodium salt