P,P′-[5′-(4-Phosphonophenyl)[1,1′:3′,1′′-terphenyl]-4,4′′-diyl]bis[phosphonic acid] CAS 1045720-71-5
| CAS No. | 1045720-71-5 |
| Molecular Formula | C24H21O9P3 |
| Molecular Weight | 546.34 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
P,P′-[5′-(4-Phosphonophenyl)[1,1′:3′,1′′-terphenyl]-4,4′′-diyl]bis[phosphonic acid] (CAS 1045720-71-5), molecular formula C24H21O9P3 and molecular weight 546.34 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of P,P′-[5′-(4-Phosphonophenyl)[1,1′:3′,1′′-terphenyl]-4,4′′-diyl]bis[phosphonic acid] (C24H21O9P3) is characterized by a flavonoid core, a phosphate ester group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
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 | C24H21O9P3 |
| Molecular Weight | 546.34 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 14.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1988 |
Recommended Standards
- Glucose Impurity 35 (CAS CATO-C4X-209535)
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- 1-3-4-6-Tetra-O-acetyl-2-deoxy-2-(4-5-dichlorophthalimido)-D-glucopyranose (CAS 308796-43-2)
- Gold, (2-methylpropanoato-O)(triphenylphosphine)- (CAS 134705-40-1)
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- 1-Butyl-1-methylpiperidin-1-ium hexafluorophosphate(V) (CAS 1257647-66-7)
- 2-(Pyridin-3-yl)acetaldehyde (CAS 42545-63-1)
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- Ethyl 1-(naphthalen-1-yl)-1H-1,2,3-triazole-5-carboxylate (CAS 91165-92-3)
- 7-Bromo-6-fluorochroman-4-ol (CAS 1558533-77-9)
- D-Ser12-Semaglutide (CAS CATO-C4X-2226240)
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