<http://webisa.webdatacommons.org/5707157>	<http://www.w3.org/ns/prov#value>	"In the preferred embodiments, R represents an alkyl group and most preferably R is methyl." .
<http://webisa.webdatacommons.org/5707157>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/471834469>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/5707157> .
<http://webisa.webdatacommons.org/5707157>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<freepatentsonline.com> .