Cefixime Impurity 24 CAS 79368-92-6
| CAS No. | 79368-92-6 |
| Molecular Formula | C20H23N5O7S2 |
| Molecular Weight | 509.56 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Owing to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Cefixime Impurity 24 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 509.56 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO supplies Cefixime Impurity 24 (CAS 79368-92-6), a pharmacopoeial impurity reference standard (molecular formula C20H23N5O7S2, MW 509.56 g/mol) used for the identification and quantification of trace impurities in APIs.
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.
As a certified reference material (CRM), Cefixime Impurity 24 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 | C20H23N5O7S2 |
| Molecular Weight | 509.56 g/mol |
| Purity | >90% |
| 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1979 |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 2 |
Related Cefixime Standards
- Cefixime Impurity 31 (CAS CATO-C4X-113931)
- Cefixime Impurity 68 (CAS CATO-C4X-113968)
- Cefixime Impurity 71 (CAS CATO-C4X-113971)
- Cefixime Impurity 112 (CAS CATO-C4X-1139112)
- Cefixime Impurity 75 (CAS CATO-C4X-113975)
- Cefixime Impurity 95 (CAS CATO-C4X-113995)
- Cefixime Impurity 69 (CAS CATO-C4X-113969)
- Cefixime Impurity 23 (CAS CATO-C4X-113923)
Recommended Standards
- Zidovudine EP Impurity J (CAS 29706-84-1)
- Ethyl 6-amino-5-cyano-2-(((3-cyano-6,7-dihydro-5H-cyclopenta[b]pyridin-2-yl)thio)methyl)-4-(5-nitrothiophen-2-yl)-4H-pyran-3-carboxylate (CAS 445390-92-1)
- Ethyl 2-[3-amino-6-cyclopropyl-4-(trifluoromethyl)thieno[2,3-b]pyridine-2-amido]-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxylate (CAS 626226-42-4)
- Ethyl 2-(2-((3-cyano-6-cyclopropyl-4-(trifluoromethyl)pyridin-2-yl)thio)acetamido)-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate (CAS 625377-49-3)
- Letermovir Impurity 18 (CAS CATO-C4X-291518)
- Citalopram EP Impurity M (CAS 440121-09-5)
- Caspofungin Impurity 46 HAc (CAS CATO-C4X-157546)
- (Z)-4-(4-Oxo-5-(pyridin-3-ylmethylene)-2-thioxothiazolidin-3-yl)benzoic acid (CAS 1427537-93-6)
- (2-Amino-5-tert-butylthiazol-4-yl)methanol (CAS 1196152-47-2)
- 2,6-Dimethyl-4-(methoxycarbonyl)phenyl Acridine-9-carboxylate (CAS 1156506-80-7)
- 10-Methoxy-2-methyl-3-(p-tolyl)-2,3,5,6-tetrahydro-4H-2,6-methanobenzo[g][1,3,5]oxadiazocin-4-one (CAS 892295-38-4)
- 5-Pentafluoroethyl-4H-[1,2,4]triazol-3-ylamine (CAS 25979-01-5)
- 2-(4-(Chloromethyl)phenyl)-1-methyl-4-(trifluoromethyl)-1H-imidazole (CAS 2446481-81-6)
- (D-His1)-Exenatide trifluoroacetate salt (CAS 1678417-09-8)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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