About: http://webisa.webdatacommons.org/42650554

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	R1 is a hydrogen atom or an alkyl group containing from 1 to 3 carbon atoms;
http://www.w3.org/ns/prov#wasQuotedFrom	google.com