About: http://webisa.webdatacommons.org/268883834

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Another family of compounds for use in this invention is represented by formula 4 wherein X is selected from the group consisting of oxygen or 2H and R1 is H or lower alkyls such as methyl, ethyl, or propyl.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com