N-ethyl-N-(3-sulfopropyl)-3-methylaniline,sodiu salt (TOPS) (Biological level) Appearance:white powder ;Purity:≥99% Molecular fornula:C12H18NNaO3S Molecular wt:279.33 ;CAS:40567-80-4 Prod No.:TC-011 ;Producing Area:LuoYang China