About: http://webisa.webdatacommons.org/223220166

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	[0092] wherein R may be aryl (having from about 6 to about 20 carbon atoms, such as phenyl) or acyl (having from about 2 to about 20 carbon atoms, such as acetyl, or benzoyl), and 4
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com