The molecule is an organic chloride salt having 3,7-bis(dimethylamino)-4-nitrophenothiazin-5-ium as the counterion. It stains nuclei green and is sometimes used as a counterstain to red or purple primary stains. It has a role as a fluorochrome and a histological dye. It contains a 3,7-bis(dimethylamino)-4-nitrophenothiazin-5-ium.
[7-(dimethylamino)-4-nitrophenothiazin-3-ylidene]-dimethylazanium;chloride