trimedoxime bromide trimedoxime bromide trimedoxime bromide (inn), also known as dipyroxime or tmb-4, is an oxime used in the treatment of organophosphate poisoning it is chemically related to pralidoxime. trimedoxime bromideclinical dataroutes ofadministrationintramuscular injectionatc codenonelegal statuslegal status experimental; in military use pharmacokinetic dataelimination half-life2 hours (mean)identifiers iupac name 1,1′-propane-1,3-diylbis dibromide cas number56-97-3pubchem cid5359236chemspider4514238uniied0gxi9825echa infocard100.000.276 chemical and physical dataformulac15h18br2n4o2molar mass446.143 g·mol−1