2(1H)-Quinolinethione 2-Mercaptoquinoline 2-Quinolinethiol 2-Quinolinylthiol 2637-37-8 4481-48-5 AI3-18648 CARBOSTYRIL, THIO- Carbostyril, thio- (VAN) (8CI) EINECS 220-132-4 NSC 408468 NSC 43642 Quinoline-2-thiol Thiocarbostyril