Cefalexin Impurity 30 CAS 65870-51-1
| CAS No. | 65870-51-1 |
| Molecular Formula | C11H11N3O2 |
| Molecular Weight | 217.22 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 217.22 g/mol gives Cefalexin Impurity 30 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
As a process- or degradation-related impurity, Cefalexin Impurity 30 (CAS 65870-51-1, C11H11N3O2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, Cefalexin Impurity 30 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 217.22 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
As a certified reference material (CRM), Cefalexin Impurity 30 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 | C11H11N3O2 |
| Molecular Weight | 217.22 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >90% |
| Storage | Store at 2-8°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 |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1975 |
| Nitrogen Atoms | 3 |
Related Cefalexin Standards
- Cefalexin Impurity 45 (CAS CATO-C4X-126145)
- Cefalexin Monohydrate EP Impurity F (CAS CATO-C4X-122442)
- Cefalexin EP Impurity F (CAS 79750-46-2)
- Cefalexin (CAS 15686-71-2)
- Cefalexin Impurity 49 (CAS CATO-C4X-126149)
- Cefalexin Impurity 50 (CAS CATO-C4X-126150)
- Cefalexin Impurity 46 (CAS CATO-C4X-126146)
- Cefalexin EP Impurity B Sodium Salt (CAS 56871-82-0)
Recommended Standards
- Cephalexin Impurity 27 (CAS CATO-C4X-126127)
- Lenvatinib Impurity 21 (CAS 2244924-46-5)
- Cetirizine Impurity 28 (CAS CATO-C4X-158228)
- Brexpiprazole impurity 120 (CAS 53371-66-7)
- Dasatinib Impurity 49 (CAS 54198-86-6)
- Tacrolimus Impurity 4 (CAS 109466-74-2)
- Ensifentrine impurity 35 (CAS CATO-C4X-335335)
- Cefminox Impurity 36 (CAS CATO-C4X-192636)
- 2-(Benzofuran-2-yl)-2-(3-((tert-butoxycarbonyl)amino)piperidin-1-yl)acetic acid (CAS 885276-58-4)
- 3-Methyl-4-octanone (CAS 20754-04-5)
- Cariprazine Impurity 9 (CAS 1480744-38-4)
- 3-Amino-2-fluoropyridine-4-carboxamide (CAS 1804052-83-2)
- Ethyl(5-bromopyrimidin-2-yl)glycinate (CAS 1159823-83-2)
- ((Cys31,Nva34)-Neuropeptide Y (27-36))2 (CAS 172997-92-1)
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