3-methyl-10-propylpyrimido[4,5-b]quinoline-2,4-dione

10-butyl-3-methylpyrimido[4,5-b]quinoline-2,4-dione

10-butylpyrimido[4,5-b]quinoline-2,4-dione

2,7-dichlorothianthrene

2-(4-chloro-2-fluorophenylthio)benzaldehyde