nitrosonaphthol noun1 •Any of the three isomeric derivatives of naphthalene, C₁₀H₆(NOH)₂, used for colorimetric assays, such as testing for tyrosine, and in the manufacture of dyes.The benzophenoxazinone derivative for tyramine would give a product with the composition C₁₈H₁₆O₂N₂, in agreement with the analysis obtained on the nitrosonaphthol product by Udenfriend and Cooper […] — 2014 formsnitrosonaphthols
