What are the differences between "Arm length" in Biotin or Ruthenium labeling?

I ran into two labeling options for Biotin product "EZ-Link™ NHS-PEG4-Biotin, No-Weigh™ Format" and "EZ-Link™ Sulfo-NHS-LC-Biotin, No-Weigh™ Format". I wonder if anyone know there is available...

28 July 2023 9,976 0 View