to investigate this possibility , we studied reactions of 16 quinidine- and quinine-induced antibodies with quinidine , quinine , and analogues of these drugs modified at the quinoline ring ( desmethoxy-derivative ) , the quinuclidine ring ( dihydro-derivative ) , or the asymmetric c ( 9 ) -hydroxyl position .
C0034414
quinidine
C0034417
quinine