| CAS No. | 102987-83-7 |
| Molecular Formula | C34H36N3O9P |
| Molecular Weight | 661.64 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Compared with other compounds in its class, the molecular weight of 661.64 g/mol gives Phosphoramidite Impurity 29 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Phosphoramidite Impurity 29 (CAS 102987-83-7) is a certified pharmaceutical impurity reference standard with the molecular formula C34H36N3O9P and a molecular weight of 661.64 g/mol.
Based on its molecular formula C34H36N3O9P, Phosphoramidite Impurity 29 contains a nitrogen-containing heterocyclic scaffold, an amide group, a phosphate ester group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 661.64 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
As a certified reference material (CRM), Phosphoramidite Impurity 29 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
| Molecular Formula | C34H36N3O9P |
| Molecular Weight | 661.64 g/mol |
| Purity | ≥95% |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 18.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Nitrogen Atoms | 3 |