SEARCH Articles Figures Tables 3-Oxo-3,4-dihydro-2-quinoxalinecarbonyl chloride 5-methyl-4,5-dihydro- -chloride 7,12-Dihydro-2-methyl-6/7-indolo quinolizinium chloride, deprotonation 7-methoxy-4,5-dihydro- -chloride