| http://www.w3.org/ns/prov#value | - Patent US5545747 - Cyclobutanecarboxylic acid derivatives and liquid crystalline compositions ... - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More ??Sign inAdvanced Patent SearchPatentsAn optically inactive cyclobutanecarboxylic acid derivative of the general formula ##STR1## wherein R1 is a hydrogen atom or a straight or branched chain alkyl group having 1-14 carbon atoms, R2
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