About: http://webisa.webdatacommons.org/99051530

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	The radical R1 is preferably a hydrogen atom or a methyl, ethyl, butyl or propyl group, especially a methyl or ethyl group.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com