Synonyms: 52492-53-2;AC1L6MVA;NSC164010;ZINC01640051;NSC-164010;3-.beta.-d-Ribofuranosylpyrazolo[4,3-d]pyrimidin-5,7-4H,6H-dione;1,4-anhydro-1-(5,7-dioxo-4,5,6,7-tetrahydro-2H-pyrazolo[4,3-d]pyrimidin-3-yl)pentitol;3-[3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]-2,4-dihydropyrazolo[4,3-d]pyrimidine-5,7-dione