About: http://webisa.webdatacommons.org/43189446

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	Standard quaternary compounds are prepared by quaternization of a tertiary amine with such agents as benzyl chloride or di-methyl sulfate or di-ethyl sulfate or methyl chloride.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com