1(4H)-Pyrimidineethanol, 2-mercapto-4,4,6-trimethyl- 1.beta.-Hydroxyethyl-2-thio-4,4,6-trimethyl dihydropyrimidine 2(1H)-Pyrimidinethione, 3,4-dihydro-1-(2-hydroxyethyl)-4,4,6-trimethyl 5339-75-3 NSC49839 Usaf K-1797