About: http://webisa.webdatacommons.org/367180737

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	R3 and R4, independently of one another, are particularly preferably methyl, ethyl, propyl or butyl, in particular methyl.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com