Tazobactam Impurity 43 CAS 904671-24-5
| CAS No. | 904671-24-5 |
| Molecular Formula | C10H12N4O4S |
| Molecular Weight | 284.29 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Tazobactam Impurity 43 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 284.29 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).
Tazobactam Impurity 43 (CAS 904671-24-5) is a certified pharmaceutical impurity reference standard with the molecular formula C10H12N4O4S and a molecular weight of 284.29 g/mol.
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 certified reference material (CRM), Tazobactam Impurity 43 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C10H12N4O4S |
| Molecular Weight | 284.29 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Tazobactam Standards
- Tazobactam Impurity 13 (CAS CATO-C4X-120513)
- Tazobactam Impurity 41 (CAS 95813-88-0)
- Tazobactam Impurity 6 (CAS CATO-C4X-12056)
- Tazobactam EP Impurity E (CAS 117030-11-2)
- Tazobactam (CAS 89786-04-9)
- Tazobactam Impurity 17 (CAS 115546-66-2)
- Tazobactam lmpurity 29 (CAS 765233-56-5)
- Tazobactam Impurity 31 (CAS CATO-C4X-120531)
Recommended Standards
- Methotrexate Impurity 34 (CAS CATO-C4X-115434)
- Sunitinib Impurity 68 (CAS CATO-C4X-133368)
- Azilsartan Impurity 56 (CAS 91526-16-8)
- Tryptophan impurity 32 (CAS 2306500-74-1)
- Teneligliptin Impurity 5 (CAS 1415908-67-6)
- Solriamfetol Impurity 21 (CAS 1807952-54-0)
- Pregabalin Impurity 3 (CAS 916982-10-0)
- (4-methoxy-1,2-dimethylpyrrolidin-2-yl)methanol (CAS 2059937-75-4)
- Cyclohexyl 2-(2-methylphenyl)ethyl ketone (CAS 898790-29-9)
- (R)-3-Carboxy-2-((7-carboxyheptanoyl)oxy)-N,N,N-trimethylpropan-1-aminium chloride (CAS 102636-81-7 (free base))
- (R)-7-cyclohexyl-6,7-dihydro-5H-pyrrolo[1,2-a]imidazole (CAS 1221187-87-6)
- N-(1,3-Benzodioxol-5-ylmethyl)-3-pentanamine hydrobromide (CAS 1609407-98-8)
- Nifuroxime (CAS 6236-05-1)
- Semaglutide impurity 260 (CAS CATO-C4X-2226260)
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