About: http://webisa.webdatacommons.org/181530680

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	Preferred R1 groups include C1 -C4 alkyl such as methyl, ethyl, propyl, and butyl, C3 -C1- alkenyl, including allyl, 2-butenyl, benzyl, chlorobenzyl, and dichlorobenzyl.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com