AF 488 maleimide

AF 488 maleimide is a thiol-reactive dye for labeling of protein SH groups, and it can be used to attach AF 488 fluorophore to proteins and peptides containing cysteine residues, as well as to other thiolated molecules. AF488 exhibits the λem and λex wavelength of 520 nm and 470 nm, respectively[1][2].

C31H27N4NaO12S2

734.69

NC(C=C1)=C(S(=O)(O[Na])=O)C2=C1C(C3=C(C(O)=O)C=C(C(NCCCCCCN4C(C=CC4=O)=O)=O)C=C3)=C(C=C5)C(O2)=C(S(=O)([O-])=O)C5=[NH2+]

Fluorescent Dye

95.62

DMSO : 3.67 mg/mL (ultrasonic; warming)

-20°C (Powder, protect from light, stored under nitrogen)

Blue Ice