Rtitrexed Impurity 25 CAS CATO-C4X-138625
| CAS No. | CATO-C4X-138625 |
| Molecular Formula | C8H7NO3 |
| Molecular Weight | 165.15 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Rtitrexed Impurity 25 (C8H7NO3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 165.15 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO supplies Rtitrexed Impurity 25 (CAS CATO-C4X-138625), a pharmacopoeial impurity reference standard (molecular formula C8H7NO3, MW 165.15 g/mol) used for the identification and quantification of trace impurities in APIs.
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.
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 | C8H7NO3 |
| Molecular Weight | 165.15 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Rtitrexed Standards
- Rtitrexed Impurity 21 (CAS CATO-C4X-138621)
- Rtitrexed Impurity 24 (CAS CATO-C4X-138624)
- Rtitrexed Impurity 26 (CAS CATO-C4X-138626)
- Rtitrexed Impurity 27 (CAS CATO-C4X-138627)
- Rtitrexed Impurity 22 (CAS CATO-C4X-138622)
- Rtitrexed Impurity 23 (CAS CATO-C4X-138623)
- Rtitrexed Impurity 28 (CAS CATO-C4X-138628)
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