4H-1-Benzopyran-4-one, 2-(4-nitrophenyl)-3-(phenylazo)-   Product ID: AC-1077492 Product Name: 4H-1-Benzopyran-4-one, 2-(4-nitrophenyl)-3-(phenylazo)- CAS: 139909-21-0 Molecular Formula: C21H13N3O4 MW: 371.34562 Appearance: Assay: Hazard Symbols: N/A Request For Quotation Email:sales@abichem.com

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