Cefdinir Impurity 76 CAS CATO-C4X-121076
| CAS No. | CATO-C4X-121076 |
| Molecular Formula | C28H26N10O10S4 |
| Molecular Weight | 790.83 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 790.83 g/mol gives Cefdinir Impurity 76 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Cefdinir Impurity 76 (CAS CATO-C4X-121076) is a certified pharmaceutical impurity reference standard with the molecular formula C28H26N10O10S4 and a molecular weight of 790.83 g/mol.
Cefdinir Impurity 76 (C28H26N10O10S4) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
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 | C28H26N10O10S4 |
| Molecular Weight | 790.83 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) | 21.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 10 |
| Sulfur Atoms | 4 |
Related Cefdinir Standards
- Cefdinir Impurity 41 (CAS CATO-C4X-121041)
- Cefdinir Impurity 46 (CAS CATO-C4X-121046)
- Cefdinir Impurity 47 (CAS CATO-C4X-121047)
- Cefdinir Impurity 48 (CAS CATO-C4X-121048)
- Cefdinir Impurity 58 (CAS CATO-C4X-121058)
- Cefdinir Impurity 98 (CAS CATO-C4X-121098)
- Cefdinir Impurity 42 (CAS CATO-C4X-121042)
- Cefdinir dimer (CAS CATO-C4X-121050)
Recommended Standards
- Levothyroxine Impurity 24 (CAS CATO-C4X-167824)
- Dichlorodicarbonylbis(triphenylphosphine)ruthenium(II) (CAS 14564-35-3)
- (1R,2R)-Rel-N,N'-(cyclohexane-1,2-diyl)bis(2-(diphenylphosphino)-1-naphthamide) (CAS 178231-62-4)
- Avatrombopag impurity 123 (CAS CATO-C4X-2234123)
- Faropenem Impurity 44 (CAS CATO-C4X-128944)
- Olodaterol Impurity 29 (CAS CATO-C4X-194329)
- Acotiamide Impurity 45 (CAS CATO-C4X-111445)
- 1-(4-Hydroxyphenyl)-1,2-dihydro-5H-tetrazole-5-thione (CAS 52431-78-4)
- tert-Butyl 3-(aminomethyl)-4,5-dihydro-1H-pyrazolo[3,4-c]pyridine-6(7H)-carboxylate (CAS 1251000-36-8)
- 2-((3-Chloropyrazin-2-yl)methyl)isoindoline-1,3-dione (CAS 867165-55-7)
- N'-Hydroxy-2-morpholinopropanimidamide (CAS 720706-09-2)
- N,N'-Bis(benzo[d]thiazol-2-yl)formimidamide (CAS 36841-41-5)
- Methyl 3-(2-(hydroxymethyl)pyrrolidin-1-yl)propanoate (CAS 1249850-00-7)
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