https://www.selleckchem.com/pr....oducts/elacestrant.h
In this work, we reported a novel near-infrared (NIR) fluorescent probe RQNN with large Stokes shift (98 nm) for monitoring pH under extremely acidic conditions. For the preparation of this probe, a 1,4-diethylpiperazine moiety was introduced in rhodamine scaffold to tune the electron-donating character, and an o-phenylenediamine was introduced in spironolactone to provide larger steric hindrance. The deprotonated-protonated equilibrium between RQNN, RQNN-H+ and RQNN-H++ were evaluated in different pH by absorption and emission spec

https://llcgator.com/texas-llc/
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