Pink Dye in Protein Sample Buffer

[Dima Klenchin]

In article <53pjvq$4uo at decaxp.harvard.edu>,
   vsolomon at fas.harvard.edu (Vincent Solomon) wrote:
->I've seen some people using protein sample buffer containing a pink dye
->rather than bromophenol blue.  I guess it has some advantages including
->that it binds to nitrocellulose.  I've seen it mentioned in a Pierce
->catalog, but they only sell the whole buffer and not just the dye.  Does
->anyone know the name of this dye and where I can buy some?

"Pyronin Y" is the dye. It runs slightly faster than BPh. Blue.
We have 20 years old bottle from Sigma and looks like it'll last
forever.  

- Dima