Ponceau 3R is an azo dye that once was used as a red food colorant. Ponceau 3R is carcinogenic in rats following its oral administration, producing liver-cell tumours. It also produced bladder tumours in mice following its implantation in the urinary bladder. The oral study in mice was considered inadequate for evaluation. Ponceau 3R was reduced in vitro by Fusobacterium sp. 2, a human intestinal anaerobe, to a product which is mutagenic when metabolically activated by liver S9 preparations in the Salmonella/mammalian-microsome mutagenicity test. This mutagenic metabolite has been identified as 2,4,5-trimethylaniline.

Sodium aurothiomalate (also known as gold sodium thiomalate) is a gold compound that is used for its immunosuppressive anti-rheumatic effects. It was indicated in the treatment of selected cases of active rheumatoid arthritis—both adult and juvenile type. The greatest benefit occurs in the early active stage. In late stages of the illness when cartilage and bone damage have occurred, gold can only check the progression of rheumatoid arthritis and prevent further structural damage to joints. It cannot repair damage caused by previously active disease. Gold Sodium Thiomalate should be used only as one part of a complete program of therapy; alone it is not a complete treatment. The mode of action is unknown, but was found, that aurothiomalate is able to inhibit Microsomal prostaglandin E synthase-1 (mPGES-1 expression. mPGES-1 is a terminal enzyme in the production of prostaglandin E2 (PGE2) and its expression is upregulated during inflammation. mPGES-1 is considered as a potential drug target for the treatment of arthritis to reduce adverse effects related to the current non-steroidal anti-inflammatory drugs (NSAIDs).

Cupric Formate (Copper(II) formate) is an inorganic salt derived from formic acid. It is used as antibacterial agent in the treatment of cellulose. Effective fungicide.