About: http://webisa.webdatacommons.org/439179075

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.1 is a hydrogen atom or an alkyl group selected from the group consisting of methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, s-butyl, t-butyl, n-pentyl, isopentyl, neopentyl, t-pentyl, n-hexyl and isohexyl, and
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com