Phenylalanine Impurity 4 CAS CATO-C4X-30974
| CAS No. | CATO-C4X-30974 |
| Molecular Formula | C14H11NO7 |
| Molecular Weight | 305.24 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Phenylalanine Impurity 4 (C14H11NO7) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 305.24 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 process- or degradation-related impurity, Phenylalanine Impurity 4 (CAS CATO-C4X-30974, C14H11NO7) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
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 | C14H11NO7 |
| Molecular Weight | 305.24 g/mol |
| Appearance | Pale yellow to 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Phenylalanine Standards
- D-Phenylalanine, N-[(1,1-dimethylethoxy)carbonyl]-N,β,β-trimethyl- (CAS 676487-38-0)
- L-Phenylalanine, 4-chloro-N-[(1,1-dimethylethoxy)carbonyl]-2-fluoro- (CAS 1213690-82-4)
- L-Phenylalanine, N-[2-(2-naphthalenyl)acetyl]- (CAS 934395-57-0)
- L-Phenylalanine benzyl ester (CAS 962-39-0)
- L-Phenylalanine tert-Butyl Ester-d5 (CAS 1177315-89-7)
- L-Phenylalanine tert-Butyl Ester (CAS 16874-17-2)
- Phenylalanine impurity 1 (CAS 90988-28-6)
- Phenylalanine betaine (CAS 56755-22-7)
Recommended Standards
- Vilanterol Impurity 63 (CAS CATO-C4X-193563)
- Clenhexerol (CAS 78982-88-4)
- Tert-butyl 3,3-difluoro-4-hydroxy-4-(trifluoromethyl)piperidine-1-carboxylate (CAS 2101206-79-3)
- Clenhexerol (CAS 38339-23-0)
- Indometacin Impurity 55 (CAS CATO-C4X-147055)
- Abrocitinib Impurity 51 (CAS CATO-C4X-288451)
- Pentoxifylline EP Impurity K (CAS 74857-22-0)
- Mirogabalin Impurity 142 (CAS CATO-C4X-2924142)
- Methyl 3-ethynyl-5-fluorobenzoate (CAS 914944-24-4)
- 1-Fluoro-4-(1-isocyanatocyclopentyl)benzene (CAS 1226221-21-1)
- 5-(4-Fluoronaphthalen-1-yl)oxazole-2-carbaldehyde (CAS 1394021-38-5)
- 7-Hydroxy-5-(pyridin-2-yl)pyrazolo[1,5-a]pyrimidine-3-carboxylic acid (CAS 1646543-40-9)
- 2-[(6-chloro-4-methyl-2-oxo-2h-chromen-7-yl)oxy]acetic acid (CAS 326102-48-1)
- FMRF-Like Peptide from snail Helix aspersa (CAS 98495-35-3)
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