| CAS No. | 5961-85-3 |
| Molecular Formula | C9H15O6P |
| Molecular Weight | 250.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
3,3',3''-Phosphanetriyltripropionic acid (CAS 5961-85-3) is a high-purity analytical reference standard with the molecular formula C9H15O6P and a molecular weight of 250.19 g/mol.
The molecular framework of 3,3',3''-Phosphanetriyltripropionic acid (C9H15O6P) is characterized by a phosphate ester group, a carboxylic acid 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.
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.
| Molecular Formula | C9H15O6P |
| Molecular Weight | 250.19 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 2.5 |
| CAS Registry Year (est.) | 1958 |