Cefprozil EP Impurity G CAS CATO-C4X-14927
| CAS No. | CATO-C4X-14927 |
| Molecular Formula | C18H21N3O6S |
| Molecular Weight | 407.44 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Cefprozil EP Impurity G 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.
Cefprozil EP Impurity G (CAS CATO-C4X-14927) is a certified pharmaceutical impurity reference standard with the molecular formula C18H21N3O6S and a molecular weight of 407.44 g/mol.
Owing to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Cefprozil EP Impurity G is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 407.44 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
Physical & Chemical Properties
| Molecular Formula | C18H21N3O6S |
| Molecular Weight | 407.44 g/mol |
| Purity | >90% |
| 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 |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Cefprozil Standards
- Cefprozil Impurity 52 (CAS CATO-C4X-149252)
- Cefprozil Impurity 61 (CAS CATO-C4X-149261)
- Cefprozil EP Impurity I (CAS CATO-C4X-14929)
- Cefprozil Impurity 36 (CAS CATO-C4X-149236)
- Cefprozil Impurity 37 (CAS CATO-C4X-149237)
- Cefprozil Impurity 12 (CAS CATO-C4X-149212)
- Cefprozil Impurity N1(Z-Cefprozil) (CAS 121412-77-9)
- Cefprozil (CAS 92665-29-7)
Recommended Standards
- Imipenem impurity 33 (CAS CATO-C4X-1662133)
- Linezolid Impurity 27 (CAS CATO-C4X-107327)
- Torasemide Impurity 25 (CAS CATO-C4X-183625)
- ((3aR,6aS)-5-(4,6-dimethylpyrimidin-2-yl)hexahydropyrrolo[3,4-c]pyrrol-2(1H)-yl)(2-fluoro-6-(2H-1,2,3-triazol-2-yl)phenyl)methanone (CAS 1452539-75-1)
- Bazedoxifene Acetate Impurity 12 (CAS CATO-C4X-128812)
- Omeprazole Impurity 16 (CAS CATO-C4X-125516)
- Milbemycin Impurity 9 (CAS CATO-C4X-16989)
- 1-(4-Chlorophenyl)-3-(5-methyloxazol-3(2H)-yl)urea (CAS 55807-83-5)
- Ethyl 2-(4-cyano-2-methylphenyl)acetate (CAS 1261879-30-4)
- 2-Fluoro-3-(pyridin-3-yl)-6-(trifluoromethyl)pyridine (CAS 1214338-67-6)
- 2-(3,4-Dichlorophenyl)-2-morpholinoacetonitrile hydrochloride (CAS 1208081-09-7)
- 2-Iodo-5-methoxybenzamide (CAS 1130283-73-6)
- Edaravone Impurity 10 (CAS 607-67-0)
- Vancomycin Hexapeptide (CAS 115236-65-2)
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