Ceftazidime impurity 121 CAS CATO-C4X-1212121
| CAS No. | CATO-C4X-1212121 |
| Molecular Formula | C34H43N5O12S2 |
| Molecular Weight | 777.86 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Ceftazidime impurity 121 (CAS CATO-C4X-1212121), a pharmacopoeial impurity reference standard (molecular formula C34H43N5O12S2, MW 777.86 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Ceftazidime impurity 121 (C34H43N5O12S2) 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 16.0, corresponding to approximately 16 ring(s) or double-bond equivalent(s). With a molecular weight of 777.86 g/mol, it falls into the high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
As a certified reference material (CRM), Ceftazidime 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.
Physical & Chemical Properties
| Molecular Formula | C34H43N5O12S2 |
| Molecular Weight | 777.86 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) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 2 |
Related Ceftazidime Standards
- Ceftazidime Impurity 31 (CAS CATO-C4X-121231)
- Ceftazidime Impurity 32 (CAS CATO-C4X-121232)
- Ceftazidime impurity 116 (CAS CATO-C4X-1212116)
- Ceftazidime impurity 119 (CAS CATO-C4X-1212119)
- Ceftazidime Impurity 75 (CAS CATO-C4X-121275)
- Ceftazidime Impurity 101 (CAS CATO-C4X-1212101)
- Ceftazidime impurity 113 (CAS CATO-C4X-1212113)
- Ceftazidime impurity 114 (CAS CATO-C4X-1212114)
Recommended Standards
- Mal-PEG4-Val-Cit-PAB (CAS 1949793-41-2)
- 380221-63-6 8L3OAJ1R5A UK-432097 UNII-8L3OAJ1R5A 6-((2,2-Diphenylethyl)amino)-9-(N-ethyl-beta-D-ribofuranosyluronamide)-N-(2-(N'-(1-(2-pyridyl)-4-piperidyl)ureido)ethyl)-9H-purine-2-carboxamide UK-432,097 beta-D-Ribofuranuronamide, 1-deoxy-1-(6-((2,2-diphenylethyl)amino)-2-(((2-((((1-(2-pyridinyl)-4-piperidinyl)amino)carbonyl)amino)ethyl)amino)carbonyl)-9H-purin-9-yl)-N-ethyl- (CAS 380221-63-6)
- Docetaxel Impurity 54 (CAS 173101-47-8)
- CAS 2086298-71-5 (CAS 2086298-71-5)
- Ilaprazole impurity 200 (CAS CATO-C4X-1130200)
- N-Nitroso Tropicamide EP Impurity A (CAS 13256-23-0)
- Methylprednisolone Impurity 69 (CAS CATO-C4X-191969)
- 2-Iodobenzofuran-6-ol (CAS 112768-48-6)
- 9-Oxo-9H-indeno[1,2-b]pyrazine-2,3-dicarbonitrile (CAS 40114-84-9)
- 3-Chloro-5,6-dihydrobenzo[b]thiophen-7(4H)-one (CAS 1823904-24-0)
- tert-Butyl 7-fluoro-6-nitro-3,4-dihydroisoquinoline-2(1H)-carboxylate (CAS 912846-67-4)
- (S)-tert-Butyl 3-(pyrazin-2-ylamino)piperidine-1-carboxylate (CAS 1421012-92-1)
- 8-(3-Chloro-5-(trifluoromethyl)pyridin-2-yl)-N-(4-chlorophenyl)-1-oxa-4,8-diazaspiro[4.5]Decane-4-carboxamide (CAS 338397-31-2)
- Des-Gln24-Tirzepatide (CAS CATO-CPTD788949)
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