About: http://webisa.webdatacommons.org/156309157

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	c acid methyl ester, acetoacetic acid ethyl ester, and acetoacetic acid-2-methoxyethyl ester; and ??-diketones such as acetylacetone, 2,4-hexanedione, 2,4-heptanedione, 3,5-heptanedione and dipivaloylmethane.
http://www.w3.org/ns/prov#wasQuotedFrom	freshpatents.com