2,3-Diaminonaphthalene reacts with nitrosonium, which is formed from NO, to form the fluorescent dye 1 H-naphthotriazole. This method can be used to detect 10 nM to 10 uM of nitrite (NO2-) and is compatible with 96-well format. Yellow orange solid soluble in DMSO Store at desiccated at 4°C, protect from light C10H10N2 MW: 158