About: http://webisa.webdatacommons.org/446803835

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	For the present process, it is preferred that R1 is methyl, phenyl, or vinyl; however, it is especially preferred that R1 is hydrogen.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com