Synonyms: BUTTPARK 99\57-79;ART-CHEM-BB B018703;AKOS B018703;AKOS BBS-00004608;5H-CYCLOPENTA[4,5]THIENO[2,3-D]PYRIMIDINE, 4-CHLORO-6,7-DIHYDRO-;4-CHLORO-2,3-DIHYDRO-1H-8-THIA-5,7-DIAZA-CYCLOPENTA[A]INDENE;4-CHLORO-6,7-DIHYDRO-5H-CYCLOPENTA[4,5]THIENO[2,3-D]PYRIMIDINE