3,3,5,5-Tetramethylbenzidine dihydrochloride

3,3',5,5'-Tetramethylbenzidine dihydrochloride, min. 99 %, biochemistry TMB dihydrochloride, TMB · 2 HCl C16H20N2 · 2 HCl, Mol.weight 313,27g/mol, Storage temp. +4°C, CAS-No. 207738-08-7, EG-No. 264-769-6