About: http://webisa.webdatacommons.org/446074914

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	Particularly preferred derivatives are salts of compounds described herein where W is alkylene, more particularly CH2.
http://www.w3.org/ns/prov#wasQuotedFrom	google.de