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mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">chemical names</topic></authority><related type="other"><topic>common terms</topic></related><related type="broader"><topic>names</topic></related><variant type="other"><topic>chemical name</topic></variant> <note xml:lang="en"><![CDATA[ Scientific term designations for chemical compounds that define their elemental composition and molecular structure, usually according to International Union of Pure and Applied Chemistry (IUPAC) standards. These are used rather than common names to disambiguate substances. ]]></note></mads>