1-(2,5-Dichlorophenyl)-2-thio-4,4,6-trimethyl dihydropyrimidine 2(1H)-Pyrimidinethione, 1-(2,5-dichlorophenyl)-3,4-dihydro-4,4,6-trimethyl- 63704-45-0 NSC49830 Usaf K-1350