About: http://webisa.webdatacommons.org/346872511

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	R.sup.4 is, in particular, hydrogen or methoxy, and especially preferably hydrogen.
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com