NAPHTHOL AS-BI PHOSPHATE

• CAT Number: M123293
• CAS Number: 1919-91-1
• Molecular Formula: C18H15BrNO6P
• Molecular Weight: 452.20
• Purity: ≥95%
• Synonyms: Napthol AS-BI Phosphoric Acid;N-ASBI-P
• Storage: -20°C
• IUPAC Name: [6-bromo-3-[(2-methoxyphenyl)carbamoyl]naphthalen-2-yl] dihydrogen phosphate
• InChI: InChI=1S/C18H15BrNO6P/c1-25-16-5-3-2-4-15(16)20-18(21)14-9-12-8-13(19)7-6-11(12)10-17(14)26-27(22,23)24/h2-10H,1H3,(H,20,21)(H2,22,23,24)
• InChIKey: HUXIAXQSTATULQ-UHFFFAOYSA-N
• SMILES: COC1=CC=CC=C1NC(=O)C2=C(C=C3C=CC(=CC3=C2)Br)OP(=O)(O)O

Naphthol AS-BI phosphate (Cat No.: M123293) is a synthetic organic compound primarily used as a chromogenic substrate in enzymatic assays, especially for detecting alkaline phosphatase activity. Upon enzymatic cleavage of the phosphate group, it yields a colored azo dye when coupled with a diazonium salt, enabling colorimetric detection in histochemical and diagnostic applications. Its naphthol-based structure offers strong color development and stability. Naphthol AS-BI phosphate is widely used in immunohistochemistry, biochemical assays, and cell staining protocols for identifying enzyme expression and localization.