5-Hydroxy-uridin, 5-Hydroxy-uracil-ribotid, Uridine,5-hydroxy, 5-hydroxy-uridine, 1-[(2R,3R,4S,5R)-3,4-dihydroxy-5-methylol-tetrahydrofuran-2-yl]-5-hydroxy-pyrimidine-2,4-quinone, 1-[(2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]-5-hydroxy-pyrimidine-2,4-dione