121502-05-4 2,6-Bis(1,1-dimethylethyl)-4-(2-(5-methyl-1H-pyrazol-3-yl)ethenyl)phenol PD 127443 PD-127443 Phenol, 2,6-bis(1,1-dimethylethyl)-4-(2-(5-methyl-1H-pyrazol-3-yl)ethenyl)-, (E)-