ATB-346 is a hydrogen sulphide-releasing anti-inflammatory drug [1].
ATB-346 is a non-steroidal anti-inflammatory drug (NSAID) and shows a markedly reduced toxicity than its parent compound naproxen. In the airpouch model, ATB-346 significantly inhibited the PGE2 level and completely suppressed the whole blood TXB2 synthesis without causing gastric damage. In rats with adjuvant-Induced arthritis, administration of ATB-346 reduced the paw volume on days 14 and 21 notably. ATB-346 did not exert any damage or bleeding in the stomach or small intestine while naproxen caused bleeding in the small intestine. Besides that, administration of naproxen twice daily for 5 days in rats resulted in extensive damage in the small intestine. In contrast, same dose of ATB-346 caused quite little damage over the treatment of the 5 days [1].
References:
[1] Wallace J L, Caliendo G, Santagada V, et al. Markedly reduced toxicity of a hydrogen sulphide-releasing derivative of naproxen (ATB-346). British journal of pharmacology, 2010, 159(6): 1236-1246.