The SDP (sulfodicholorphenol) ester is currently the most hydrolytically stable amine-reactive moiety available from Invitrogen. Conjugates produced with the Alexa Fluor® 488 5-SDP ester produce the same strong amide bond between the dye and the compound of interest as succinimidyl (SE or NHS) and tetrafluorophenyl (TFP) esters, but with the improved stability in water and buffers, the SDP ester can potentially offer increased control and consistency in these reactions compared to the NHS and TFP esters.
For Research Use Only. Not for use in diagnostic procedures.
Alexa Fluor Dyes
Label or Dye:
Alexa Fluor™ 488
Active Ester, SDP Ester
Contents & storage
Store in freezer (-5 to -30°C) and protect from light.