Abstract: A compound of formula I having the structure: or a pharmaceutically acceptable salt thereof, wherein A1 and A2 are independently O or S; X is selected from CH2, CD2, NR3, O, and S, where R3 is selected from hydrogen, C1-C4 linear or branched chain alkyl, halo(C1-C4)linear or branched chain alkyl, and hydroxyl(C1-C4)linear or branched chain alkyl; Y and Z are selected from C and N, where when Y is C, then Z is N, and when Y is N, then Z is C; R1 and R2 are independently selected from hydrogen, deuterium, C1-C4 linear or branched chain alkyl, etc.; or a C1-C2 alkyl substituted with a C3-C5 cycloalkyl ring; or taken together to form a C3-C6 cycloalkyl ring; or where X is CH2 or CD2, then R1 and R2 are independently selected from hydrogen, deuterium, halogen, hydroxyl, C1-C4 linear or branched chain alkyl, etc.; R4 is selected from hydrogen, deuterium, cyano, halogen, (C1-C3) alkoxy, etc.; R5 is selected from hydrogen, deuterium, halogen, C1-C3 alkoxy, amino, (C1-C4 linear or branched chain alkyl)amino, etc.

Abstract: A storage device for the storage and retrieval of arbitrary sequences of binary information provides areal densities exceeding terabytes per square centimeter (TB/cm2) and even petabytes per square centimeter (PB/cm2) in a 3D configuration. The information is encoded in long strands of biological or non-biological molecules such as artificial DNA, RNA or other synthetic molecules that form a macromolecule. The strands are written in-situ and, in some cases synthesized in-situ, transported to and from read and write stations and memory locations on the device. The data is read out by detecting individual bases or collection of bases directly from the strand.