About: http://webisa.webdatacommons.org/61319408

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 presence of impurities, such as"isomer, necessitates additional crystallization from a less polar solvent, e.g. chosen from among esters, such as ethyl acetate, butyl acetate, or similar.
http://www.w3.org/ns/prov#wasQuotedFrom	patentgenius.com