| http://www.w3.org/ns/prov#value | - Preferred oxa acids include monoacids of formula: and diacids of formula: wherein n is an integer greater than or equal to 1, preferably from 1 to 27, and R is typically H or CH3, but may also be any organic moiety selected from the group consisting of a linear or branch chained alkyl, a substituted or unsubstituted carbocyclic or heterocyclic groups.
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