Latamoxef impurity 43 CAS CATO-C4X-179843
| CAS No. | CATO-C4X-179843 |
| Molecular Formula | C21H22N6O9S |
| Molecular Weight | 534.50 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Latamoxef impurity 43 (CAS CATO-C4X-179843), a pharmacopoeial impurity reference standard (molecular formula C21H22N6O9S, MW 534.50 g/mol) used for the identification and quantification of trace impurities in APIs.
Latamoxef impurity 43 (C21H22N6O9S) contains a flavonoid core, 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).
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 | C21H22N6O9S |
| Molecular Weight | 534.50 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 6 |
| Sulfur Atoms | 1 |
Related Latamoxef Standards
- Latamoxef Impurity 18 (CAS CATO-C4X-179818)
- Latamoxef Impurity 38 (CAS CATO-C4X-179838)
- Latamoxef Impurity 40 (CAS CATO-C4X-179840)
- Latamoxef Impurity 9 (CAS CATO-C4X-17989)
- Latamoxef impurity 41 (CAS CATO-C4X-179841)
- Latamoxef Impurity 26 (CAS CATO-C4X-179826)
- Latamoxef Impurity N1 (CAS 79120-38-0)
- Latamoxef Impurity 13 (CAS CATO-C4X-179813)
Recommended Standards
- 2-(3,5-Difluoro-4-((3-(5-methoxy-4-((3-methoxypyridin-4-yl)amino)pyrimidin-2-yl)-1H-indazol-1-yl)methyl)phenoxy)ethan-1-ol (CAS 1891087-61-8)
- Cercosporin (CAS 35082-49-6)
- Methyl Calcein (CAS 25639-40-1)
- (E)-Ethyl 2,2-difluoro-3-(5-methyl-2-((2-methylallyl)oxy)phenyl)-3-(2-((2-(trifluoromethyl)phenyl)sulfonyl)hydrazono)propanoate (CAS 2738683-69-5)
- Travoprost Impurity 60 (CAS 64998-32-9)
- Dotinurad Impurity 171 (CAS 50910-59-3)
- Mirogabalin Impurity 177 (CAS CATO-C4X-2924177)
- 4-(2,4-Difluoro-benzyloxy)-benzylamine (CAS 1061651-00-0)
- 2-(Cyclopentylamino)ethan-1-ol hydrochloride (CAS 1193389-76-2)
- 2-((2-(4-Ethylphenoxy)ethoxy)methyl)oxirane (CAS 540760-63-2)
- 2-Methoxyethyl 2-(4-methoxybenzylidene)-7-methyl-3-oxo-5-(thiophen-2-yl)-3,5-dihydro-2H-thiazolo[3,2-a]pyrimidine-6-carboxylate (CAS 618071-66-2)
- Pentisomide (CAS 78833-03-1)
- (2R)-2-(((2R)-1-(Bis(4-methoxyphenyl)(phenyl)methoxy)-3-(((2-cyanoethoxy)(diisopropylamino)phosphino)oxy)propan-2-yl)oxy)-2-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)ethyl benzoate (CAS 1120329-48-7)
- endo-Gly31-Semaglutide (CAS CATO-C4X-2226282)
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