About: http://webisa.webdatacommons.org/33932666

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	ydrogen and one of A or B is other than hydrogen when R3 is --CH3 ; and pharmaceutically acceptable salts and individual optical isomers thereof.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com