Entacapone impurity 41 CAS CATO-C4X-162941
| CAS No. | CATO-C4X-162941 |
| Molecular Formula | C15H10Cl2N4O7 |
| Molecular Weight | 429.17 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Entacapone impurity 41.
CATO supplies Entacapone impurity 41 (CAS CATO-C4X-162941), a pharmacopoeial impurity reference standard (molecular formula C15H10Cl2N4O7, MW 429.17 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C15H10Cl2N4O7, Entacapone impurity 41 contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 429.17 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C15H10Cl2N4O7 |
| Molecular Weight | 429.17 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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; 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 |
| Nitrogen Atoms | 4 |
Related Entacapone Standards
- Entacapone impurity 43 (CAS CATO-C4X-162943)
- Entacapone impurity 54 (CAS CATO-C4X-162954)
- Entacapone Impurity 35 (CAS CATO-C4X-162935)
- Entacapone Impurity 5（Mixture of chiral isomers） (CAS CATO-C4X-16295)
- Entacapone impurity 46 (CAS CATO-C4X-162946)
- Entacapone impurity 47 (CAS 1402714-31-1)
- Entacapone impurity 49 (CAS CATO-C4X-162949)
- Entacapone impurity 51 (CAS CATO-C4X-162951)
Recommended Standards
- 2,4-dichlorophenyl 4,5,6,7-tetrafluoro-2-methylbenzo[b]furan-3-sulphonate (CAS 256329-74-5)
- Opicapone Impurity 41 (CAS CATO-C4X-240441)
- 3,6-Dibromo-9-(3,5-dimethylphenyl)-9H-carbazole (CAS 1873364-08-9)
- Chloroprocaine impurity 2 (CAS CATO-C4X-32862)
- Ursodeoxycholic Acid impurity 87 (CAS CATO-C4X-142287)
- Relugolix Impurity 66 (CAS CATO-C4X-242966)
- Clomipramine Hydrochloride EP Impurity F (CAS 32943-25-2)
- 4-(azidomethyl)-3-fluorobenzonitrile (CAS 368426-24-8)
- 3-benzyl-2,2-dimethylpyrrolidine hydrochloride (CAS 1955540-55-2)
- 5'-O-DMT-3'-O-TBDMS-Ac-rC (CAS 123956-65-0)
- 1-Oxo-1,2,3,4-tetrahydroisoquinoline-8-carbonitrile (CAS 1352394-93-4)
- 1-(2-Ethynylphenyl)cyclobutane-1-carboxylic acid (CAS 2228813-45-2)
- 3-(5-Methyl-2-nitrophenoxy)propan-1-amine (CAS 848640-46-0)
- Tau Peptide (245-274) (Repeat 1 Domain) trifluoroacetate salt (CAS 1428134-39-7)
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