About: http://webisa.webdatacommons.org/313236077

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	The nitrogen atoms can be located in the ??,?? positions or in other positions such as the ??,?? positions, as in the case of 1,3-propylene diamine, which is a preferred material.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com