New fuchsine

New fuchsine, new fuchsin, Magenta III, Basic Violet 2, or C.I. 42520 (from German "fuchs", fox) is a magenta dye having chemical formula 22243. It is closely related to fuchsine and fuchsine acid. It can be used for staining acid fast organism, eg. by Ziehl-Neelsen stain.