Syntheses of fluorescent dyes. IX. New 4-hydroxycoumarins, 4-hydroxy-2-quinolones, 2H,5H-pyrano[3,2-c]benzopyran-2,5-diones and 2H,5H-pyrano[3,2-c]quinoline-2,5-diones

R&D Labs maybe for 74813-16-4

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• PharmOrgsyn

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