Phenylephrine Impurity 20 CAS CATO-C4X-146720
| CAS No. | CATO-C4X-146720 |
| Molecular Formula | C11H14NO4 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Phenylephrine Impurity 20 (CAS CATO-C4X-146720) is a certified pharmaceutical impurity reference standard with the molecular formula C11H14NO4Na and a molecular weight of 247.23 g/mol.
The molecular framework of Phenylephrine Impurity 20 (C11H14NO4Na) is characterized by an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C11H14NO4 Na |
| Molecular Weight | 247.23 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Phenylephrine Standards
- Phenylephrine Impurity 58 (CAS 1007885-60-0)
- Phenylephrine Impurity 100 (CAS 1026633-55-5)
- Phenylephrine Related Compound G (CAS 1094089-46-9)
- Phenylephrine EP Impurity D Racemate (CAS 1159977-09-9)
- Phenylephrine Impurity 18 (Mixture of Diastereomers) (CAS 1217525-08-0)
- Phenylephrine-d3 HCl (Methyl-d3) (CAS 1217858-50-8)
- Phenylephrine-3-O-Sulfate (CAS 1242184-39-9)
- Phenylephrine 2-O-β-glucuronide, >98% (CAS 1260611-56-0)
Recommended Standards
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- N-DBCO-N-bis(PEG2-C2-NHS ester) (CAS 2128735-29-3)
- 1-(3-methoxyphenyl)-1H-pyrazole (CAS 613686-10-5)
- (2R,3S,5R)-2-((Bis(4-methoxyphenyl)(phenyl)methoxy)methyl)-5-(5-ethynyl-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)tetrahydrofuran-3-yl (2-cyanoethyl) diisopropylphosphoramidite (CAS 615288-66-9)
- Sunitinib Impurity 1 (CAS 37746-78-4)
- Insulin Glargine Metabolite M2 (CAS CATO-CPTD788867)
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