7-deaza-2′-deoxy-guanosine-5′-triphosphate is a nucleotide analog that is a candidate substrate for processive telomerase. The use of this analog improves PCR (polymerase chain reaction) yields. This compound also makes sequencing of GC rich sequences easier, especially if template amount is low and/or DNA quality is not good. The product contains 7-Deaza-2′-deoxy-guanosine-5′-triphosphate as a 10 mM solution of the lithium salt.