About: http://webisa.webdatacommons.org/321989385

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	e substituents at the R.sub.1 and R.sub.2 positions are hydrogen, monohalosubstituted hydrocarbon, ether, thioether, or hydrocarbons including alkyl, alkenyl, cycloalkyl, cycloalkenyl or aryl of from 1 to about 8 carbon atoms.
http://www.w3.org/ns/prov#wasQuotedFrom	patentgenius.com