About: http://webisa.webdatacommons.org/54340725

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	An ???alkylene chain??? is a polymethylene group, i.e., ???(CH2)n???, wherein n is a positive integer, preferably from 1 to 6, from 1 to 4, from 1 to 3, from 1 to 2, or from 2 to 3.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com