Do you offer any amine-to-sulfhydryl crosslinkers with polyethylene glycol (PEG) spacer arms?

We have 2 crosslinkers that can react with thiol groups. MHPH (Cat. No. S-1009) which is maleimido HyNic, and MTFB (Cat. No. S-1035) which is maleimido 4FB. Our unique system is that HyNic reacts with 4FB to form a stable hydrazone bond. We have a long-chain crosslinker (PEG4/PFB) (Cat. No. S-1034) which reacts with amine groups and attaches 4FB.