Store › SiR-azide 1mg Image 1 of 1 SiR-azide 1mg $838.00 Quantity: Add To Cart Added! SiR-azide is a clickable derivative of SiR. It reacts with alkynes and allows the preparation of custom SiR-conjugates. SiR-azide is a clickable derivative of SiR. It reacts with alkynes and allows the preparation of custom SiR-conjugates.