Cefaclor Impurity N3 HCl CAS 722547-49-1(Free Base)
| CAS No. | 722547-49-1(Free Base) |
| Molecular Formula | C17H18N2O3 |
| Molecular Weight | N/A |
| 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 Cefaclor Impurity N3 HCl.
Cefaclor Impurity N3 HCl (CAS 722547-49-1(Free Base)) is a certified pharmaceutical impurity reference standard with the molecular formula C17H18N2O3HCl and a molecular weight of 334.80 g/mol.
Structurally, Cefaclor Impurity N3 HCl (C17H18N2O3HCl) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 334.80 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).
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), Cefaclor Impurity N3 HCl 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 | C17H18N2O3 HCl |
| Molecular Weight | 334.80 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Cefaclor Standards
- Cefaclor Impurity C10 (CAS 108260-07-7)
- Cefaclor Impurity 46 (CAS 134624-91-2&6453-64-1 (mixture))
- Cefaclor Impurity 23 (CAS 1426173-90-1)
- Cefaclor Impurity 24 (CAS 142975-51-7)
- Cefaclor EP Impurity C (CAS 143059-69-2)
- Cefaclor EP Impurity D (Mixture of Diastereomers) (CAS 152575-13-8)
- Cefaclor EP Impurity E (CAS 188915-50-6)
- Cefaclor Impurity 37 (CAS 21746-02-1)
Recommended Standards
- Indobufen impurity 79 (CAS CATO-C4X-179279)
- Candesartan Cilexetil Impurity 47 (CAS CATO-C4X-123447)
- Suzetrigine Impurity 5 (CAS CATO-C4X-33695)
- 3-O-Β-D-quinovopyranosylquinovic acid 28-O-β-D-glucopyranosyl ester (CAS 124727-10-2)
- Ubrogepant Impurity 11 (CAS 2568065-21-2)
- 4-(2-Chloropyrimidin-4-yl)morpholine (CAS 62968-37-0)
- 5,10,15,20-Tetra(4-pyridyl)-21H,23H-porphyrin-Co (CAS 14244-55-4)
- C6 NBD Glucosylceramide (CAS 94885-03-7)
- 5-(2-Chloro-6-fluorophenyl)oxazole (CAS 2021428-58-8)
- Semaglutide impurity 274 (CAS CATO-C4X-2226274)
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