... powder Content: 98.0% Min CAS Number: 79-74-3 2,5-bis(1,1-dimethylpropyl)-1,4-Benzenediol Chemical name ... ); Santovar A; Santovar TAHQ;2,5-Bis(1,1-dimethylpropyl)-1,4-benzenediol; 2,5-Bis(1,1-dimethylpropyl)hydroquinone;2,5-Di(tert-amyl ... )-1,4-benzohydroquinone; 2,5-Di(tert-amyl ...