Nucleotides are organic molecules that serve as the monomers, or subunits, of nucleic acids (like DNA and RNA). The building blocks of nucleic acids, nucleotides consist of a nitrogenous base (purine or pyrimidine), a five-carbon sugar (ribose or deoxyribose), and at least one phosphate group. A nucleoside along with a phosphate group yields a nucleotide. The Deoxynucleotide mix is a convenient premixed dNTP solution containing 10 mM each of UltraPure dATP, dCTP, dGTP, and TTP sodium salts in high-quality molecular biology grade water. One µL is sufficient for a standard 50 µL PCR reaction.