ChEBI: PicoGreen is a cyanine dye that is 1-phenylquinoline which is substituted at position 2 by a bis[3-(dimethylamino)propyl]amino group and at position 4 by a (3-methyl-1,3-benzothiazol-3-ium-2-yl)methylene group. The counter ion is not stated. A fluorochrome that selectively binds double-stranded DNA and has characteristics similar to that of SYBR-Green I. It has a role as a fluorescent dye. It is a tertiary amine, a member of quinolines, a member of benzothiazoles and a cyanine dye.