MPA (Mal-(CH2)2-COOH)
EMCA (Mal-(CH2)5-COOH)
KMUA (Mal-(CH2)10-COOH)
BMPS (NHS-(CH2)2-Mal)
EMCS (NHS-(CH2)5-Mal)
KMUS (NHS-(CH2)10-Mal)
SMCC
Sulfo-SMCC
Sulfo-NHS
HOSu