Stains-all is a fairly common histological dye with an impressive chemical name: 1-Ethyl-2-[3-(1-ethylnaphtho[1,2-d]thiazolin-2-ylidene)-2-methylpropenyl]naphtho[1,2-d]thiazolium bromide, 3,3′-Diethyl-9-methyl-4,5,4′,5′-dibenzothiacarbocyanine .

Whew! Stains-all is easier to pronounce. Note that it's a carbocyanine.

Sigma-Aldrich: http://www.sigmaaldrich.com/catalog/...g=en&region=US