159565-60-3 2(1H)-Quinazolinone, 4-cyclopropyl-3,4-dihydro-4-(2-pyridinylethynyl)-, (S)- 6-Chloro-4(S)-cyclopropyl-3,4-dihydro-4-((2-pyridyl)ethynyl)quinazolin-2(1H)-one L 738372 L-738,372 L-738372