2,2-Bis(3,5-dimethyl-4-hydroxyphenyl)propane; Bisxylenol A; NSC 73730; 2,2-Bis(4-hydroxy-3,5-dimethylphenyl)propane; Tetramethylbisphenol A; 3,3',5,5'-Tetramethyl-4,4'-dihydroxydiphenyl-2,2-propane; 4,4'-Isopropylidenebis(2,6-dimethylphenol); 4,4'-Isopropylidenedi-2,6-xylenol;

Tetramethylbisphenol A is a methylated congener of Bisphenol A. Tetramethylbisphenol A is a flame retardant with anti-thyroid hormonal activity. Tetramethylbisphenol A inhibits growth and interferes with microtubules in human fibroblasts in vitro.