Ferric chloride is a compound used as a food additive, a haemostatic or treatment for hypochromic anaemia. Ferric chloride induced vascular injury is a widely used model of occlusive thrombosis that reports platelet activation and aggregation in the context of an aseptic closed vascular system. Iron i.v. ferric chloride (960 mg) has being shown to be effective in correcting anaemia in HD patients with iron deficiency.

Pararosaniline pamoate (CI 403-A) was developed as an orally active drug for the treatment of Schistosoma japonicum infection. The clinical trial has shown that capsules were safe and effective; in addition, this drug was well tolerated with a minimum of side effects, which were mostly mild and transient and did not require interruption of treatment. Besides, pararosaniline pamoate was an inhibitor of E.histolytica Hsp90 (EhHsp90) with promising activity against the parasite Pararosaniline pamoate, that causes amebiasis worldwide. Information about the current use of this drug is not available.

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.