12-methyl-12H-quinoxalino[2,3-b][1,4]benzothiazine

11-methylquinoxalino[2,3-b][1,4]benzothiazine

2,2,7,7-tetramethylcycloheptan-1-one

2,2,8,8-tetramethylcyclooctan-1-one

2-phenylsulfanylbutan-2-ylsulfanylbenzene