... powder Content: 98.0% Min CAS Number: 79-74-3 2,5-bis(1,1-dimethylpropyl)-1,4-Benzenediol Chemical name ... -Di-tert-amylhydroquinone (DTAHQ); Hydroquinone, 2,5-di-tert-pentyl- (6CI,7CI,8CI); Santovar A; Santovar TAHQ;2,5-Bis(1,1-dimethylpropyl ... )-1,4-benzenediol; 2,5-Bis(1,1-dimethylpropyl ...