About: http://webisa.webdatacommons.org/372020228

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	and R.sup.4 are as defined above and X is a halogen atom such as chlorine, bromine or iodine, to condensation reaction.
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com