Dye content 50 % Synonym(s): Direct Yellow 59; Primuline Yellow Empirical Formula: C₂₁H₁₄N₃NaO₃S₃ Formula Weight: 475.54 Linear Formula: C₂₁H₁₄N₃NaO₃S₃ MDL Number: …

Primuline is a dye containing the benzothiazole ring system. The primulines are considered derivatives of dehydrothiotoluidine (aminobenzenyltoluylmercaptan). It is pale yellow in solution under visible light and is blue fluorescent under ultraviolet. Primulin is used in retrograde double…