About: http://webisa.webdatacommons.org/9322808

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	In some such embodiments, R4 is a C1-C4 alkyl or a substituted C1-C4 alkyl and R3 or is H. In some embodiments, one of R3 or R4 is a methyl group.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com