... :>98% Product Categories:Enzyme substrates 3,3',5,5'-Tetramethylbenzidine dihydrochloride detail informations Product Name:3,3',5,5'-Tetramethylbenzidine dihydrochlorideSynonymsTMB ... and may be light sensitive 3,3',5,5'-Tetramethylbenzidine dihydrochloride