pyrimidine ribonucleosides zebularine 1-beta-D-ribofuranosyl-2(1H)-pyrimidinone 1-beta-D-ribofuranosylpyrimidin-2(1H)-one 228.075 228.20206 Beilstein:751056 C9H12N2O5 CAS:3690-10-6 CHEBI:46938 DrugBank:DB03068 InChI=1S/C9H12N2O5/c12-4-5-6(13)7(14)8(16-5)11-3-1-2-10-9(11)15/h1-3,5-8,12-14H,4H2/t5-,6-,7-,8-/m1/s1 LINCS:LSM-36362 OC[C@H]1O[C@H]([C@H](O)[C@@H]1O)n1cccnc1=O RPQZTTQVRYEKCR-WCTZXXKLSA-N Zebularine chebi_ontology pyrimidin-2-one beta-D-ribofuranoside pyrimidin-2-one beta-ribofuranoside pyrimidin-2-one ribonucleoside