(4-Nitrophenyl)phosphonic acid CAS 2175-86-2
| CAS No. | 2175-86-2 |
| Molecular Formula | C6H6NO5P |
| Molecular Weight | 203.09 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO supplies (4-Nitrophenyl)phosphonic acid (CAS 2175-86-2), a certified reference material (molecular formula C6H6NO5P, MW 203.09 g/mol) for analytical method development and quality control.
Based on its molecular formula C6H6NO5P, (4-Nitrophenyl)phosphonic acid contains a carbohydrate-derived structure, an amide group, a phosphate ester group; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 203.09 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C6H6NO5P |
| Molecular Weight | 203.09 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 1 |
Related Nitrophenyl Standards
- 1-(3-Methyl-4-nitrophenyl)-1h-imidazole (CAS 102791-92-4)
- 4-Methyl-1-(2-nitrophenyl)-1H-pyrazole (CAS 103262-51-7)
- 5-Methyl-1-(2-nitrophenyl)-1h-pyrazole (CAS 1247439-67-3)
- 3-(4-Methyl-3-nitrophenyl)-1h-pyrazole (CAS 1249978-17-3)
- 1-Methyl-5-(4-nitrophenyl)-1h-pyrazole (CAS 1339768-47-6)
- 5-Methyl-1-(4-nitrophenyl)-1H-pyrazole (CAS 13788-99-3)
- 4-Methyl-1-(4-nitrophenyl)-1H-pyrazole (CAS 13808-73-6)
- 1-(2-Methyl-4-nitrophenyl)-1H-imidazole (CAS 154164-39-3)
Recommended Standards
- 6-Phosphononicotinic acid (CAS 145432-84-4)
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- 2,5-Bis(trifluoromethyl)-1H-pyrrole (CAS 220072-95-7)
- Methyl 1-amino-5-methyl-1H-pyrazole-4-carboxylate (CAS 145631-09-0)
- 2-(4-(Trifluoromethyl)piperidin-1-yl)propanoic acid (CAS 1480279-71-7)
- 8-Methyl-2-(pyridin-4-yl)quinoline-4-carboxylic acid (CAS 107027-42-9)
- 2-Methoxy-N-(3-methoxybenzyl)ethan-1-amine (CAS 827327-99-1)
- 1-{5-Bromo-1H-pyrrolo[2,3-b]pyridin-3-yl}ethan-1-one (CAS 866545-96-2)
- 1-Methylpyrrolidin-2-imine (CAS 7544-76-5)
- tert-Butyl (2-((3-aminopropyl)amino)ethyl)carbamate (CAS 221296-50-0)
- 3-(2-Fluorophenyl)-5-methyl-2-thioxoimidazolidin-4-one (CAS 78334-95-9)
- 1-(5-(2-Hydroxy-3-methoxyphenyl)-3-(thiophen-2-yl)-4,5-dihydro-1H-pyrazol-1-yl)-2-(piperidin-1-yl)ethan-1-one (CAS 900013-20-9)
- D-Trp25-Tirzepatide (CAS CATO-CPTD788909)
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