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2,3 Diaminonaphthalene is a fluorometric probe for nitrite. It reacts  to form the fluorescent dye 1 H-naphthotriazole.

Product Attributes

CAS number


Molecular weight



365/415 (After Reaction)

Storage Conditions

Store at 2 to 8 °C, Protect from light, Desiccate

Molecular Formula: C10H10N2

Catalog #
100 mg
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Product Description

2,3-Diaminonaphthalene reacts with nitrosonium, which is formed from nitrite at low pH, 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.

  • Fluorometric probe for nitrite
  • Quantify 10 nM to 10 uM of nitrite
  • Yellow orange solid soluble in DMSO

Molecular Structure:


  1. Luminescence 14, 283 (1999), DOI: 10.1002/(SICI)1522-7243(199911/12)14:6<283::AID-BIO572>3.0.CO;2-G
  2. Methods Enzymol. 268, 105 (1996), DOI: 10.1016/s0076-6879(96)68013-6
  3. Anal Biochem 214, 11 (1993), DOI: 10.1006/abio.1993.1449

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