Compounds with the R-COOOH functional group are called peroxyacids (recommendation C-441.1). The name of the compound is constructed from the name of the carboxylic acid with the same number of carbon atoms preceded by the prefix peroxyโ. The common names of the acids preceded by the prefix perโ are allowed.
In diacids the prefixes monoperoxyโ or diperoxyโ are used. Esters derived from peroxyacids are named with Oโ or OOโ when necessary.