About: http://webisa.webdatacommons.org/420902888

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	R3 very particularly preferably represents hydrogen, methyl, CD3, CH2Cl, CH2F, CH2N(CH3)3; preferably methyl.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com