3-Pyrazoline-4-sulfonamide, 5-oxo-1-phenyl-N,N,2,3-tetramethyl- 4684-88-2 5-25-09-00207 (Beilstein Handbook Reference) 5-Oxo-1-phenyl-N,N,2,3-tetramethyl-3-pyrazoline-4-sulfonamide BRN 0823243