About: http://webisa.webdatacommons.org/398600089

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 hydrogen; or halogen such as fluorine, chlorine, bromine and iodine;
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com