3-Amino-1,2,4-triazine is an inhibitor of NO Synthase, and also inhibits nitrite secretion[1].
3-Amino-1,2,4-triazine (50 mM; 7 h) inhibits NO synthase activity in cytosolic extracts of activated cells[1].
3-Amino-1,2,4-triazine (5-50 mM; 24 h) inhibits both nitrite secretion and parasite killing by activated macrophages[1].
[1]. BuchmÜller-Rouiller Y, et al. 3-amino-1,2,4-triazole inhibits macrophage NO synthase. Biochem Biophys Res Commun. 1992 Feb 28;183(1):150-5.