succinimidyl 6-(N-(7-nitrobenz-2-oxa-1,3-diazol-4-yl)amino)hexanoate (NBD-X, SE)
from
Molecular Probes (Invitrogen)
Description
The amine-reactive NBD-X, succinimidyl ester can be used to create environment sensitive bioconjugates. NBD is a functional analog of the dinitrophenyl hapten, and its fluorescence is quenched upon binding to anti-dinitrophenyl (anti-DNP) antibodies.