Cathinoner, f.eks. mefedron, methylon og MDPV, er alle dukket op på det illegale marked, hvor de sælges som erstatninger for kokain, ecstasy og amfetamin, eller som de pågældende stoffer.
Cathinone drugs, such as mephedrone, methylone and MDPV, have all appeared on the illicit market, where they are sold as replacements for cocaine, ecstasy and amphetamine, or as the drugs themselves.