Ceftriaxone Impurity 26 CAS 77780-49-5
| CAS No. | 77780-49-5 |
| Molecular Formula | C5H7N3O2S |
| Molecular Weight | 173.19 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C5H7N3O2S, Ceftriaxone Impurity 26 contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 173.19 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
CATO supplies Ceftriaxone Impurity 26 (CAS 77780-49-5), a pharmacopoeial impurity reference standard (molecular formula C5H7N3O2S, MW 173.19 g/mol) used for the identification and quantification of trace impurities in APIs.
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), Ceftriaxone Impurity 26 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 | C5H7N3O2S |
| Molecular Weight | 173.19 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°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) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1979 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Ceftriaxone Standards
- Ceftriaxone Impurity 45 (CAS CATO-C4X-116345)
- Ceftriaxone Impurity 37 (CAS 149-30-4)
- Ceftriaxone impurity 52 (CAS 876500-90-2)
- Ceftriaxone Sodium EP Impurity C (CAS 58909-39-0)
- Ceftriaxone EP Impurity C (CAS CATO-C4X-116342)
- Ceftriaxone Impurity 48 (CAS CATO-C4X-116348)
- Ceftriaxone Impurity 38 (CAS 6938-68-7)
- Ceftriaxone Sodium E-Isomer (CAS 108260-00-0)
Recommended Standards
- Celecoxib Impurity 13 (CAS 1576-43-8)
- N-Nitroso Tizanidine USP Related Compound C (CAS CATO-C4X-144564)
- Vonoprazan Impurity 54 (CAS 1421640-34-7)
- Sulfadimethoxine EP Impurity D (CAS 121-57-3)
- Sitagliptin Impurity 97 (CAS 1391437-27-6)
- Cyclophosphamide impurity 30 (CAS 2924754-60-7)
- Finerenone Impurity 73 (CAS CATO-C4X-288073)
- (5-Amino-2-iodophenyl)boronic acid (CAS 1227633-13-7)
- (2-Aminophenyl)(cyclohexyl)methanone (CAS 3432-87-9)
- (S)-2-Amino-4-oxopentanoic acid (CAS 4439-83-2)
- 4-((((1-(2-Fluoroethyl)-1H-pyrazol-5-yl)methyl)amino)methyl)-2-methoxyphenol hydrochloride (CAS 1856057-48-1)
- Azathioprine Impurity 24 (CAS CATO-C4X-146324)
- 1-(1,3-Dimethyl-1h-1,2,4-triazol-5-yl)-4-ethylcyclohexan-1-amine (CAS 1249064-14-9)
- Hexapeptide-11 (CAS 161258-30-6)
Why CATO?
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- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com