Cefprozil Impurity 39 CAS CATO-C4X-149239
| CAS No. | CATO-C4X-149239 |
| Molecular Formula | C20H22N4O5S2 |
| Molecular Weight | 462.54 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a process- or degradation-related impurity, Cefprozil Impurity 39 (CAS CATO-C4X-149239, C20H22N4O5S2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Owing to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Cefprozil Impurity 39 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 462.54 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.
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 | C20H22N4O5S2 |
| Molecular Weight | 462.54 g/mol |
| Purity | 97%+ |
| 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 2 |
Related Cefprozil Standards
- Cefprozil EP Impurity M (CAS CATO-C4X-149211)
- Cefprozil EP Impurity N (CAS CATO-C4X-149217)
- Cefprozil Impurity 30 (CAS CATO-C4X-149230)
- Cefprozil Impurity 31 (CAS CATO-C4X-149231)
- Cefprozil Impurity 57 (CAS CATO-C4X-149257)
- Cefprozil Impurity 60 (CAS CATO-C4X-149260)
- Cefprozil Impurity 52 (CAS CATO-C4X-149252)
- Cefprozil Impurity 61 (CAS CATO-C4X-149261)
Recommended Standards
- Tadalafil Impurity 93 (CAS CATO-C4X-108793)
- Aztreonam impurity 102 (CAS CATO-C4X-1522102)
- CAS 67805-34-9 (CAS 67805-34-9)
- Osimertinib Impurity 5 (CAS 1009298-59-2)
- Enalapril Impurity 34 (CAS CATO-C4X-133434)
- Vigabatrin Impurity 12 (CAS CATO-C4X-119612)
- Topiramate Chlorosulfonyl Impurity (CAS 150609-95-3)
- 4-[4-(3-Chlorophenyl)piperazin-1-yl]-4-oxobutanoic acid (CAS 438616-45-6)
- 5-(4-Fluorophenyl)dihydrofuran-2(3H)-one (CAS 51787-96-3)
- Propyl 2-amino-4-(3,4-dimethylphenyl)thiophene-3-carboxylate (CAS 904998-83-0)
- 6-Nitronicotinoyl chloride (CAS 60780-82-7)
- Relebactam Impurity 82 (CAS CATO-C4X-214482)
- [26-Pro]Calcitonin (CAS CATO-C4X-221823)
- Liraglutide Impurity 13 TFA Salt (CAS CATO-C4X-199213)
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