152946-68-4 2-Amino-6-methyl-5-(4-pyridinylthio)-4(1H)-quinazolinone dihydrochloride 3,4-Dihydro-2-amino-6-methyl-4-oxo-5-(4-pyridylthio)quinazoline dihydrochloride 4(1H)-Quinazolinone, 2-amino-6-methyl-5-(4-pyridinylthio)-, dihydrochloride AG 337 AG-337 Nolatrexed dihydrochloride Thymitaq