<?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">carboxymethyl chitosan</topic></authority><related type="broader"><topic>chitosan</topic></related><variant type="other"><topic>C20H37N3O14</topic></variant><variant type="other"><topic>CMCH</topic></variant><variant type="other"><topic>carboxymethyl-chitosan</topic></variant> <note xml:lang="en"><![CDATA[ A chitosan derivative with an amphoteric character that has the potential to improve paper strength and form films with a good barrier to gases and antibacterial activity. In conservation, it is used as a paper consolidant. ]]></note></mads>