Ceftibuten Impurity 3 CAS 174761-17-2
| CAS No. | 174761-17-2 |
| Molecular Formula | C41H38N4O8S2 |
| Molecular Weight | 778.89 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Ceftibuten Impurity 3 (CAS 174761-17-2), a pharmacopoeial impurity reference standard (molecular formula C41H38N4O8S2, MW 778.89 g/mol) used for the identification and quantification of trace impurities in APIs.
Ceftibuten Impurity 3 (C41H38N4O8S2) 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).
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 | C41H38N4O8S2 |
| Molecular Weight | 778.89 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) | 25.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2006 |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 2 |
Related Ceftibuten Standards
- Ceftibuten Impurity 6 (CAS CATO-C4X-18906)
- Ceftibuten Impurity 23 (CAS 51762-51-7)
- Ceftibuten Impurity 13 (CAS 36923-19-0)
- Ceftibuten Impurity 5 (CAS CATO-C4X-18905)
- Ceftibuten Impurity 14 (CAS CATO-C4X-189014)
- Ceftibuten Impurity 15 (CAS CATO-C4X-189015)
- (E)-Ceftibuten Dihydrate (CAS 1428117-81-0)
- Ceftibuten (CAS 97519-39-6)
Recommended Standards
- Desacetyl Rifampicin Quinone (CAS 65110-92-1)
- Amphoteronolide B (CAS 106799-07-9)
- N2-Isobutyryl-2',3'-dideoxy-3'-tritylaminoguanidine-5'-O-N,N-diisopropylaminocyanoethylphosphoramidi (CAS 195375-66-7)
- Azido-PEG4-Amido-tri-(t-butoxycarbonylethoxymethyl)-methane (CAS 1421933-29-0)
- Peramivir impurity 143 (CAS CATO-C4X-1833143)
- Aripiprazole Impurity N7 (CAS 76835-17-1)
- Riboflavin Impurity 24 (CAS CATO-C4X-181924)
- 5-Bromothiophene-2-carbonyl Chloride (CAS 31555-60-9)
- 5-(chloromethyl)-3-thien-3-yl-1,2,4-oxadiazole (CAS 869709-84-2)
- 5-Hydroxy-4-(2-methoxy-5-(trifluoromethyl)phenyl)-5-methylfuran-2(5H)-one (CAS 1354819-34-3)
- Olanzapine Impurity 5 (CAS 138564-60-0)
- 2,4-Difluoro-5-nitroaniline (CAS 123344-02-5)
- 2-(Hydrazinylmethyl)-N,N-dimethylaniline (CAS 849095-09-6)
- Tirzepatide Impurity 26 X TFA Salt (CAS CATO-C4X-324026)
Why CATO?
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