<http://webisa.webdatacommons.org/prov/141546618>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/122254224> .
<http://webisa.webdatacommons.org/122254224>	<http://www.w3.org/ns/prov#value>	"In formula I above R1 preferably is a hydrogen or C1 -C6 -alkyl, especially hydrogen or methyl." .
<http://webisa.webdatacommons.org/122254224>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/464367214>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/122254224> .
<http://webisa.webdatacommons.org/122254224>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .