9-methyl-3,4-dihydropyrido[3,4-b]indole

1-甲氧基蒽醌

4-methylbenzenesulfonic acid,1-oxo-2-(1H-pyridin-2-ylidenemethylamino)guanidine

1-hydroxy-2-[(E)-(3-methylthiophen-2-yl)methylideneamino]guanidine,4-methylbenzenesulfonic acid