Aztreonam Impurity 121 CAS CATO-C4X-1522121
| CAS No. | CATO-C4X-1522121 |
| Molecular Formula | C13H19N5O6S |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Aztreonam Impurity 121 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.
CATO supplies Aztreonam Impurity 121 (CAS CATO-C4X-1522121), a pharmacopoeial impurity reference standard (molecular formula C13H19N5O6SC2HF3O2, MW 487.41 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Aztreonam Impurity 121 (C13H19N5O6SC2HF3O2) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, fluorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 487.41 g/mol, it falls into the moderately-high-molecular-weight range. 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).
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.
Physical & Chemical Properties
| Molecular Formula | C13H19N5O6S 2*C2HF3O2 |
| Molecular Weight | 487.41 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 1 |
Related Aztreonam Standards
- Aztreonam Impurity 4 (CAS 102507-85-7)
- Aztreonam USP RC F (CAS 102579-57-7)
- Aztreonam USP RC D (CAS 102579-59-9)
- Aztreonam impurity 68 (CAS 102579-59-9(free base))
- Aztreonam USP RC B(Open-ring Desulfated Aztreonam) (CAS 102586-36-7)
- Aztreonam Impurity 92 (CAS 102586-36-7（free base）)
- Aztreonam-d6 (CAS 1127452-94-1)
- Aztreonam Impurity 20 (CAS 121054-30-6)
Recommended Standards
- Epinastine Impurity 16 (CAS 1557-50-2)
- Desmopressin Impurity 46 (CAS CATO-C4X-221546)
- Dextromethorphan Impurity 3-methoxy-17-methyl-morphinan-10β-ol Formic acid (CAS 120442-81-1（free base）)
- 2-Propenoic acid, polymer with ethenylbenzene and ethyl 2-propenoate (CAS 25585-77-7)
- Lanreotide Impurity 15 (CAS CATO-C4X-237015)
- N-(5-bromopyridin-2-yl)-3-methylbutanamide (CAS 311314-11-1)
- 3,5-Dimethyl-4-nitrobenzaldehyde (CAS 18515-18-9)
- N1-Propyl-N2-(thiophen-3-ylmethyl)oxalamide (CAS 1060305-35-2)
- 2-Bromo-3-[(2-methylthio)phenyl]-1-propene (CAS 951889-15-9)
- Semaglutide impurity 38 (CAS CATO-C4X-222638)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com