Dye- and Quencher-labeled ATPγS and GTPγS nucleotides are highly interesting research tools. Their limited stability makes it impossible to keep stocks of them and to offer them as catalog products that are available immediately.
Therefore, any labeled ATPγS or GTPγS is freshly prepared per order. For this reason the price is higher than for stable nucleotide-dye conjugates which can be synthesized and kept in stock.
EDA-GTPγS (NU-1610) labeled with various fluorescence quenchers.