166520-72-5 2h-1-benzopyran-6-sulfonic acid, 2-oxo-, 2-phenylhydrazide

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Product Name	2H-1-Benzopyran-6-sulfonic acid, 2-oxo-, 2-phenylhydrazide
CAS No.	166520-72-5
Molecular Formula	C₁₅H₁₂N₂O₄S

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