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<http://webisa.webdatacommons.org/107470060>	<http://www.w3.org/ns/prov#value>	"oup at the 7-position, R1 is a hydrogen atom, a lower alkyl...http://www.google.com/patents/US5270465?utm_source=gb-gplus-sharePatent US5270465 - 4(3H)-pteridinone compoundsAdvanced Patent SearchPublication numberUS5270465 APublication typeGrantApplication numberUS 07/970,839Publication dateDec 14, 1993Filing dateNov 3, 1992Priority dateMar 30, 1989Fee statusLapsedPublication number07970839, 97083" .
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