2(1H)-Pyrimidinethione, 3,4-dihydro-1-(2-methylpropyl)-4,4,6-trimethyl- 2(1H)-Pyrimidinethione, 3,4-dihydro-1-isobutyl-4,4,6-trimethyl- 3,4-Dihydro-1-isobutyl-4,4,6-trimethyl-2(1H)-pyrimidinethione 37929-29-6