3,6-dimethoxy-1-methyl-2-phenylquinolin-4-one

4,9-dihydro-7-methoxy-4-methyl-9-oxo-pyrazolo[5,1-b]quinazoline-2-carbonitrile

4-methyl-7-methoxy-2-(1H-tetrazol-5-yl)-pyrazolo-[5,1-b]quinazolin-9(4H)one

4,9-dihydro-7-methoxy-4-methyl-9-oxopyrazolo[5,1-b]quinazoline-2-carboxylic acid

ethyl 7-methoxy-4,9-dihydro-4-methyl-9-oxopyrazolo<5,1-b>quinazoline-2-carboxylate