has role has functional parent ferroptosis inducer azobenzenes pyridines sulfonamide antiinfective agent non-steroidal anti-inflammatory drug sulfanilamide gastrointestinal drug EC 2.5.1.18 (glutathione transferase) inhibitor drug allergen sulfasalazine An azobenzene consisting of diphenyldiazene having a carboxy substituent at the 4-position, a hydroxy substituent at the 3-position and a 2-pyridylaminosulphonyl substituent at the 4'-position.