Fenofibrate Impurity 16 CAS CATO-C4X-101816
| CAS No. | CATO-C4X-101816 |
| Molecular Formula | C19H15ClO3 |
| Molecular Weight | 326.77 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Fenofibrate Impurity 16 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.
CATO supplies Fenofibrate Impurity 16 (CAS CATO-C4X-101816), a pharmacopoeial impurity reference standard (molecular formula C19H15ClO3, MW 326.77 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a steroid core, a hydroxyl group, an ether linkage, chlorine substitution, Fenofibrate Impurity 16 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 326.77 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
Physical & Chemical Properties
| Molecular Formula | C19H15ClO3 |
| Molecular Weight | 326.77 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
Related Fenofibrate Standards
- Fenofibrate Impurity 14 (CAS CATO-C4X-164314)
- Fenofibrate EP Impurity B-d6 (Fenofibric Acid-d6) (CAS 1092484-69-9)
- Fenofibrate EP Impurity E (CAS 42019-07-8)
- Fenofibrate Impurity N113 (CAS 60012-96-6)
- Fenofibrate Impurity 2 (CAS 62809-66-9)
- Fenofibrate Impurity 17 (CAS CATO-C4X-164317)
- Fenofibrate Impurity 33 (CAS 62809-68-1)
- Fenofibrate EP Impurity C (CAS 217636-47-0)
Recommended Standards
- N'-(4-chloro-3-fluorobenzylidene)-4-methylbenzenesulfonohydrazide (CAS 2306459-81-2)
- Tert-butyl 4-(6-chloro-5-formylpyrimidin-4-yl)piperazine-1-carboxylate (CAS 1017782-55-6)
- N'-(4-chloro-2-fluorobenzylidene)-4-methylbenzenesulfonohydrazide (CAS 2432855-09-7)
- 4-Chloro-6-((4-methoxybenzyl)oxy)-2-phenylpyrimidine (CAS 1044559-74-1)
- Tedizolid Impurity 34 (CAS CATO-C4X-105434)
- Xanomeline Impurity 8 (CAS 131987-88-7)
- Benserazide impurity 39 (CAS CATO-C4X-142739)
- 3-(2,2,2-Trifluoroethoxy)cyclohexan-1-amine (CAS 929973-27-3)
- (7-Isopropyl-5-oxo-2,3-dihydro-5H-[1,3]thiazolo[3,2-a]pyrimidin-3-yl)acetic acid (CAS 1105198-41-1)
- 4-bromo-5-fluoro-3H-1,3-benzoxazol-2-one (CAS 2156619-43-9)
- Sodium 3-(3-methoxyphenyl)propanoate (CAS 1260671-96-2)
- Benzoylmesaconine (CAS 63238-67-5)
- 2-Ethyl-N-(1-(pyridin-2-yl)ethyl)butan-1-amine (CAS 1042618-05-2)
- Semaglutide impurity 211 (CAS CATO-C4X-2226211)
Why CATO?
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