polynoxylin polynoxylin polynoxylin (trade name anaflex in egypt) is an antiseptic for local treatment of the skin and the mouth. it is a formaldehyde releasing antimicrobial polymer. polynoxylinclinical dataroutes ofadministrationtopicalatc codea01ab05 (who) d01ae05 (who)identifiers iupac name (poly) methylene-n,n'-bis(hydroxymethyl)urea cas number9011-05-6 ychemspidernoneuniie18nbg5eeykeggd07067comptox dashboard (epa)dtxsid00891874 echa infocard100.108.096 chemical and physical dataformula(c4h8n2o3)n (verify)