2,5-Dibromo-3,4-dinitrothiophene with CAS number of 52431-30-8 is also called for 2,5-Dibromo-3,4-dinitrothiophene ; Akos 92299 ; 2,5-Dibromo-3,4-dinitrthiphene ; 2,5-Dibromo-3,4-dinitrothiophene 98+% .