N,N-bis(4-sulfobutyl)-3-methylaniline,disodiumsalt（TODB）(Biologicallevel)N,N-双(4-磺丁基)-3-甲基***(TODB)(生物级)Appearance:whitepowderPurity:≥99%Molecularformula:C15H23NNa2O6S2Molecularwt:423.46ProducingArea:SuqianChinaApplication:determiningcholesterolwithcolorimtricmethod.)