About: http://webisa.webdatacommons.org/308731367

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 relation to Formula (III), typically, R 3 and R 4 are an alkyl group having up to 10 carbon atoms, more suitably of from 1 up to 4 carbon atoms.
http://www.w3.org/ns/prov#wasQuotedFrom	sumobrain.com