Hi, I am looking for some low molecular weight organic compound/dye that absorbs light above 600 nm up to 750 nm with a decent absorptivity, that is reactive to amines or has a carboxilic acid that can be activated to react with amines.
I need it to be reasonably economic, let´s say 200 USD for a 100mg, or less.
So Alexas and Attos may be out of the question.., but all the ideas are welcome.
Thank you!
Philippe Roger Bovy and Adam B Shapiro , it would be for a primary amine, and it does not have to be fluorescent, but it would be better. Thank you!
I don't think you will find a fluorescent dye with the desired excitation wavelength at that price.
Cyanine 5 NHS ester 100 mg for $850
https://www.lumiprobe.com/p/cy5-nhs-ester
Absorption maximum 646 nm
Extinction coefficient 250,000 M-1cm-1
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