Patent ID: 7994143

Claim:
A nucleoside phosphate selected from the group of compounds having the following structures: wherein R is selected from the group consisting of —R 1 —O—R 2 , wherein R 1 is selected from the group consisting of an optionally substituted C 1 to C 11 alkyl group and R 2 is selected from the group consisting of a C 6 to C 17 alkyl group or a C 6 to C 17 alkenyl group; wherein said C 6 to C 17 alkyl group is substituted with one or more alkyl groups selected from the group consisting of methyl, ethyl, propyl, or cycloalkyl, including cyclopropyl and/or one or more halogens selected from the group consisting of F, Cl, Br and I; and further wherein said C 6 to C 17 alkyl group includes one or more substituents at or near the terminal position of the alkyl group; and wherein said C 6 to C 17 alkenyl group is optionally-substituted with an alkyl group selected from the group consisting of methyl, ethyl, propyl, a cycloalkyl group including, cyclopropyl and/or one or more halogens selected from the group consisting of F, Cl, Br and I; and further wherein the said C 6 to C 17 alkenyl group contains one or more double bonds, including a terminal double bond; B is selected from a purine or pyrimidine base; and A is a counterion selected from the group consisting of H + , Li + , Na + , K + , NH 4 + , tetraalkyl ammonium and other tertiary amine salts including triethylamine.