2,2-Dimethylpropanoic acid 1-oxo-2-(2,4,6-trimethylphenyl)-1H-inden-3-yl ester 40580-62-9 AI3-27991 BRN 2162479 Propanoic acid, 2,2-dimethyl-, 1-oxo-2-(2,4,6-trimethylphenyl)-1H-inden-3-yl ester UC 41305