1,4-Dihydro-1-phenyl-4-(trimethylsilyl)-5H-tetrazol-5-one 1-Phenyl-4-trimethylsilyl-5-tetrazolinone 5H-Tetrazol-5-one, 1,4-dihydro-1-phenyl-4-(trimethylsilyl)- 68140-26-1 EINECS 268-787-5