Store › SiR-NHS ester 1mg SiR-NHS ester 1mg $765.00 Quantity: Add To Cart Added! SiR-NHS ester is the active ester form of SiR. SiR-NHS ester reacts with amines to form stable covalent amide bond SiR-NHS ester is the active ester form of SiR. SiR-NHS ester reacts with amines to form stable covalent amide bond
