Ceftolozane impurity 4 CAS 1956303-56-2
| CAS No. | 1956303-56-2 |
| Molecular Formula | C10H15N5O6S |
| Molecular Weight | 333.32 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.
As a process- or degradation-related impurity, Ceftolozane impurity 4 (CAS 1956303-56-2, C10H15N5O6S) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Ceftolozane impurity 4 (C10H15N5O6S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 333.32 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C10H15N5O6S |
| Molecular Weight | 333.32 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 1 |
Related Ceftolozane Standards
- Ceftolozane impurity 6 (CAS 1956303-49-3)
- Ceftolozane Impurity 39 (CAS CATO-C4X-240639)
- Ceftolozane Impurity 23 (CAS CATO-C4X-240623)
- Ceftolozane Impurity 38 (CAS CATO-C4X-240638)
- Ceftolozane impurity 45 (CAS CATO-C4X-240645)
- Ceftolozane Impurity 12 (CAS CATO-C4X-240612)
- Ceftolozane Impurity 26 (CAS CATO-C4X-240626)
- Ceftolozane Impurity 25 (CAS CATO-C4X-240625)
Recommended Standards
- tert-Butyl 3-((((trifluoromethyl)sulfonyl)oxy)methyl)pyrrolidine-1-carboxylate (CAS 305329-96-8)
- N-(3,5-Dimethylphenyl)-N-(1,1-dioxido-2,3-dihydrothiophen-3-yl)-2,2,2-trifluoroacetamide (CAS 1017657-25-8)
- tert-Butyl (2S,4S)-2-methyl-4-(((trifluoromethyl)sulfonyl)oxy)pyrrolidine-1-carboxylate (CAS 2833709-35-4)
- Methyl 2-((2-isopropyl-4-(trifluoromethyl)-2H-pyrazolo[3,4-b]pyridin-6-yl)thio)acetate (CAS 1018166-69-2)
- Methylene blue Impurity 6 (CAS 4727-46-2)
- Ilaprazole Impurity 215 (CAS CATO-C4X-1130215)
- Semaglutide Impurity 137 (x TFA Salt) (CAS CATO-C4X-2226137)
- n-(2-Methylbenzyl)-3-(methylthio)propan-1-amine (CAS 1183530-36-0)
- (4-Chlorophenyl)[4-(3-piperidinylmethoxy)phenyl]-methanone (CAS 946724-86-3)
- 2-Bromo-6-(trifluoromethyl)benzonitrile (CAS 914637-35-7)
- 4-Bromo-3-(difluoromethoxy)thiophene-2-carbaldehyde (CAS 2314461-93-1)
- ((R)-1-((S)-2-((4-carbamimidoylbenzyl)carbamoyl)pyrrolidin-1-yl-2,5,5-d3)-4-methyl-1-oxopentan-2-yl)glycine (CAS CATO-C3D-263090)
- Travoprost Impurity 30 (CAS CATO-C4X-192530)
- Anorexigenic Peptide (CAS 69275-10-1)
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