Entacapone impurity 50 CAS CATO-C4X-162950
| CAS No. | CATO-C4X-162950 |
| Molecular Formula | C13H17NO10 |
| Molecular Weight | 347.27 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
Entacapone impurity 50 (CAS CATO-C4X-162950) is a certified pharmaceutical impurity reference standard with the molecular formula C13H17NO10 and a molecular weight of 347.27 g/mol.
Structurally, Entacapone impurity 50 (C13H17NO10) contains a nitrogen-containing heterocyclic scaffold, 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 347.27 g/mol, it falls into the moderately-high-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), Entacapone impurity 50 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 | C13H17NO10 |
| Molecular Weight | 347.27 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, 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; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Entacapone Standards
- Entacapone Impurity 62 (CAS CATO-C4X-162962)
- Entacapone JP Impurity C (CAS CATO-C4X-162937)
- Entacapone impurity 20 (CAS CATO-C4X-162920)
- Entacapone EP Impurity D (CAS 857629-79-9)
- Entacapone Impurity 55 (CAS CATO-C4X-162955)
- Entacapone impurity 45 (CAS 2824922-39-4)
- Entacapone Impurity 10 (CAS CATO-C4X-162910)
- Entacapone Impurity 11 (CAS CATO-C4X-162911)
Recommended Standards
- tert-Butyl 4-(5-bromothiazol-2-yl)piperidine-1-carboxylate (CAS 951259-16-8)
- Methyl 3-[4-nitro-3-(trifluoromethyl)phenoxy]thiophene-2-carboxylate (CAS 303152-50-3)
- Metronidazole beta-D-Glucuronide (CAS 100495-98-5)
- Methyl 3-[4-nitro-2-(trifluoromethyl)phenoxy]-2-thiophenecarboxylate (CAS 252026-98-5)
- Oseltamivir Impurity 77 (CAS 136994-78-0)
- Prednisolone Impurity 52 (CAS 118864-87-2)
- Apixaban Impurity 130 (CAS CATO-C4X-1088130)
- 2,3-dichloro-N-(6-fluoro-3-methoxypyrazin-2-yl)benzenesulfonamide (CAS 942137-41-9)
- (S)-2-Aminoheptanedioic acid (CAS 26630-55-7)
- 3-Chloro-4,6-dibromo-2-methylphenyl isothiocyanate (CAS 1000573-77-2)
- Quinoline-2,5-diamine (CAS 1421314-22-8)
- 1-(3-Fluoro-4-hydroxypiperidin-1-yl)ethan-1-one (CAS 2287497-82-7)
- 1-cyclopropyl-4-methylpyrrolidin-3-one (CAS 1384430-91-4)
- Neuropeptide Y (free acid) (human, rat) trifluoroacetate salt (CAS 99575-89-0)
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