(1,1'-Biphenyl)-4-ol, 3,4',5-tris(1,1-dimethylethyl)- 3,4',5-Tris(1,1-dimethylethyl)(1,1'-biphenyl)-4-ol 4-Biphenylol, 3,4',5-tri-tert-butyl- 6257-39-2 EINECS 228-387-3