Pirfenidone Impurity 9 CAS CATO-C4X-22299
| CAS No. | CATO-C4X-22299 |
| Molecular Formula | C18H16N2O2 |
| Molecular Weight | 292.33 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 9 (CAS CATO-C4X-22299) is a certified pharmaceutical impurity reference standard with the molecular formula C18H16N2O2 and a molecular weight of 292.33 g/mol.
Structurally, Pirfenidone Impurity 9 (C18H16N2O2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 12.0, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 292.33 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 9 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 | C18H16N2O2 |
| Molecular Weight | 292.33 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 2 |
Related Pirfenidone Standards
- Pirfenidone Impurity 11 (CAS CATO-C4X-222911)
- Pirfenidone Impurity 13 (CAS 2251047-36-4)
- Pirfenidone Impurity 20 (CAS 377756-15-5)
- Pirfenidone Impurity 24 (CAS 912570-13-9)
- Pirfenidone Impurity 36 (CAS 53427-80-8)
- Pirfenidone Impurity 37 (CAS CATO-C4X-222937)
- Pirfenidone Impurity 22 (CAS CATO-C4X-222922)
- Pirfenidone Impurity 34 (CAS 77837-08-2)
Recommended Standards
- Trientine Impurity 7 (CAS CATO-C4X-30687)
- Coumatetralyl (CAS 5836-29-3)
- Hydantoin Impurity 28 (CAS CATO-C4X-214628)
- rac Mono(2-Ethyl-5-Oxohexyl) Phthalate (CAS 40321-98-0)
- Edaravone Impurity N3 (CAS 27301-70-8)
- Dimefline Impurity 10 (CAS 95279-60-0)
- Dalilesen Impurity 11 (CAS CATO-C4X-301011)
- 6-(1H-pyrazol-1-yl)picolinaldehyde (CAS 217657-66-4)
- Potassium trifluoro(2-(pyridin-2-yl)ethyl)borate (CAS 1350766-57-2)
- 4-(Pyrrolidin-1-ylsulfonyl)morpholine (CAS 887344-62-9)
- 2-Amino-4-(5-chloro-3-methyl-1-phenyl-1H-pyrazol-4-yl)-5-oxo-4H,5H-pyrano[3,2-c]chromene-3-carbonitrile (CAS 309926-94-1)
- 3-{[(4-tert-butylphenyl)methyl]sulfanyl}-4-ethyl-5-{thieno[2,3-b]quinolin-2-yl}-4H-1,2,4-triazole (CAS 439112-38-6)
- (3-Chloro-2-morpholinopyridin-4-yl)boronic acid (CAS 957061-04-0)
- Semaglutide impurity 75 (CAS CATO-C4X-222675)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com