Synonyms: 1-[(3ar,4s,6r,6ar)-2-hydroxy-6-(hydroxymethyl)-2-oxidotetrahydrofuro[3,4-d][1,3,2]dioxaphosphol-4-yl]pyrimidine-2,4(1h,3h)-dione;Uridine 2',3'-cyclophosphate;Uridine, cyclic 2',3'-(hydrogen phosphate);AC1Q6TEJ;AC1L4W0N;KST-1B7150;AR-1B8659;15718-50-0 (mono-hydrochloride salt);1-[(3aR,4S,6R,6aR)-2-hydroxy-6-(hydroxymethyl)-2-oxo-3a,4,6,6a-tetrahydrofuro[3,4-d][1,3,2]dioxaphosphol-4-yl]pyrimidine-2,4-dione