About: http://webisa.webdatacommons.org/217642338

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	[0499] R.sub.1 and R.sub.2 are a substituted or unsubstituted alkyl, aryl,
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com