Pirfenidone Impurity 32 CAS 92-53-5
| CAS No. | 92-53-5 |
| Molecular Formula | C10H13NO |
| Molecular Weight | 163.22 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Pirfenidone Impurity 32 (CAS 92-53-5) is a certified pharmaceutical impurity reference standard with the molecular formula C10H13NO and a molecular weight of 163.22 g/mol.
Structurally, Pirfenidone Impurity 32 (C10H13NO) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 163.22 g/mol, it falls into the medium-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
As a certified reference material (CRM), Pirfenidone Impurity 32 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 | C10H13NO |
| Molecular Weight | 163.22 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 |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 1 |
Related Pirfenidone Standards
- Pirfenidone Impurity 35 (CAS 2412-49-9)
- Pirfenidone Impurity 33 (CAS 108-86-1)
- Pirfenidone Impurity 42 (CAS 3510-66-5)
- Pirfenidone Impurity 43 (CAS 7464-14-4)
- Pirfenidone Impurity 44 (CAS 21901-18-8)
- Pirfenidone (CAS 53179-13-8)
- Pirfenidone Impurity 14 (CAS 51933-81-4)
- Pirfenidone Impurity 29 (CAS 53427-93-3)
Recommended Standards
- Crotamiton EP Impurity D (CAS 13936-60-2)
- 1-(2-Pyridyl)piperazine (CAS 34803-66-2)
- Primidone EP Impurity C (CAS 90-26-6)
- 2-Thioxothiazolidine-4-carboxylic Acid (CAS 20933-67-9)
- Sacubitril impurity 41 (CAS 1038924-61-6)
- Amorolfine Impurity 86 (CAS 27110-75-4)
- Pemafibrate Impurity 57 (CAS 106050-82-2)
- 2,6-Dihydroxypyridine (CAS 626-06-2)
- N-{2-[2-(tert-Butyl)phenoxy]ethyl}-4-(2-ethoxyethoxy)aniline (CAS 1040687-22-6)
- 2-Ethoxy-N-((1-methyl-1h-pyrazol-5-yl)methyl)ethan-1-amine (CAS 1156718-33-0)
- 2-bromo-3-(bromomethyl)benzonitrile (CAS 1086429-87-9)
- 4-Bromo-3-chloro-2,5,6-trifluoropyridine (CAS 54732-63-7)
- 4-Bromo-5-(difluoromethyl)-6-methylnicotinoyl chloride (CAS 1805376-71-9)
- Peptide 46 (H-4054.0500) (CAS 192122-40-0)
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