Cheap strong dye with COOH group?
(by novalidadress from nurfuerspam.de)
Sat Aug 6 18:24:33 EST 2011
you mean this: https://secure.wikimedia.org/wikipedia/en/wiki/Fluorescein
Yes, it was my first thought, as you may get it quite cheaply in
technical quality, even through eBay. I dismissed it quite fast, as I had
mad "bad" experience with FITC as label in fluorescence microscopy - too
fast bleaching, when irradiating with blue light from a mercury lamp or
even 488nm laser. As for now, the main purpose would be tracing an
organic compund / labelled protein during processing, am I overconcerned
> Carboxyfluorescein? Not sure about price. Shouldn't be expensive. Some
> triazine textile and inkjet dyes do come with as carboxy groups. There
> are zillions of them on the market. Not sure how to get structures for
> most of them however.
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