Store › SiR-maleimide 1mg SiR-maleimide 1mg $838.00 Quantity: Add To Cart Added! SiR-maleimide is the 2-maleimidoethyl�derivative of SiR. It reacts with thiols�and allows the preparation of custom SiR-conjugates SiR-maleimide is the 2-maleimidoethyl�derivative of SiR. It reacts with thiols�and allows the preparation of custom SiR-conjugates