Synonyms: (2r,3s,3as,6e,9ar)-2-(hydroxymethyl)-6-imino-2,3,3a,9a-tetrahydro-6h-thieno[2',3':4,5][1,3]oxazolo[3,2-a]pyrimidin-3-ol hydrochloride(1:1);AC1Q3EVL;AC1L4S6S;KST-1A6113;AR-1A2970;2,2'-Anhydro-4'-thio-1-beta-D-arabinofuranosylcytosine;6H-Thieno(2',3':4,5)oxazolo(3,2-a)pyrimidine-2-methanol, 2,3,3a,9a-tetrahydro-3-hydroxy-6-imino-, monohydrochloride, (2R-(2alpha,3beta,3abeta,9abeta))-