Phenylbutyrate Impurity 17 CAS CATO-C4X-258317
| CAS No. | CATO-C4X-258317 |
| Molecular Formula | C33H36O7 |
| Molecular Weight | 544.63 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Phenylbutyrate Impurity 17 (CAS CATO-C4X-258317) is a certified pharmaceutical impurity reference standard with the molecular formula C33H36O7 and a molecular weight of 544.63 g/mol.
Structurally, Phenylbutyrate Impurity 17 (C33H36O7) contains a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system. The molecule exhibits a degree of unsaturation (DBE) of 16.0, corresponding to approximately 16 ring(s) or double-bond equivalent(s). With a molecular weight of 544.63 g/mol, it falls into the moderately-high-molecular-weight range. 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), Phenylbutyrate Impurity 17 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.
Physical & Chemical Properties
| Molecular Formula | C33H36O7 |
| Molecular Weight | 544.63 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| 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) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Phenylbutyrate Standards
- Phenylbutyrate Impurity 12 (CAS CATO-C4X-258312)
- Phenylbutyrate Impurity 7 (CAS 864811-35-8)
- Phenylbutyrate Impurity 8 (CAS 1443417-10-4)
- Phenylbutyrate Impurity 18 (CAS CATO-C4X-258318)
- Phenylbutyrate Impurity 12 (CAS CATO-C4X-258313)
- Phenylbutyrate Impurity 11 (CAS CATO-C4X-258311)
- Phenylbutyrate Impurity 15 (CAS 77063-20-8)
- Phenylbutyrate Impurity 10 (CAS CATO-C4X-258310)
Recommended Standards
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