(p-Nitrophenyl)phosphonic acid

• CAT Number: M081373
• CAS Number: 2175-86-2
• Molecular Formula: C6H6NO5P
• Molecular Weight: 203.09
• Purity: ≥95%
• IUPAC Name: (4-nitrophenyl)phosphonic acid
• InChI: InChI=1S/C6H6NO5P/c8-7(9)5-1-3-6(4-2-5)13(10,11)12/h1-4H,(H2,10,11,12)
• InChIKey: CBWCNKVANCTCAD-UHFFFAOYSA-N
• SMILES: C1=CC(=CC=C1[N+](=O)[O-])P(=O)(O)O

(p-Nitrophenyl)phosphonic acid(CAT: M081373) is an organophosphorus compound with the molecular formula C₆H₆NO₅P, featuring a para-nitrophenyl group bonded to a phosphonic acid moiety. Appearing as a yellow crystalline solid, it is sparingly soluble in water but dissolves in polar organic solvents. The electron-withdrawing nitro group enhances the compound’s acidity and reactivity, making it useful in synthetic, analytical, and biochemical applications. It is often employed as a reagent or intermediate in the preparation of organophosphorus derivatives, enzyme inhibitors, and functional materials. In research, (p-nitrophenyl)phosphonic acid serves as a model compound for studying phosphorus-containing bioactive molecules and catalytic transformations.