<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">aldehyde</topic></authority><related type="broader"><topic>compounds</topic></related><variant type="other"><topic>aldehydes</topic></variant> <note xml:lang="en"><![CDATA[ Any member of a class of organic compounds that contain the carbonyl group (in which a carbon atom is doubly bonded to an oxygen atom), and in which the group is bonded to at least one hydrogen. With the exception of formaldehyde, a gas, aldehydes are acrid, volatile liquids. Their chief use is as chemical intermediates in polymer production for manufacture of solvents, dyes, resins, plasticizers, and pharmaceuticals.  ]]></note></mads>