Ampicillin Impurity 40 CAS CATO-C4X-144340
| CAS No. | CATO-C4X-144340 |
| Molecular Formula | C24H33N3O5S |
| Molecular Weight | 475.60 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Ampicillin Impurity 40 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 Ampicillin Impurity 40 (CAS CATO-C4X-144340), a pharmacopoeial impurity reference standard (molecular formula C24H33N3O5S, MW 475.60 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Ampicillin Impurity 40 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 475.60 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).
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.
Physical & Chemical Properties
| Molecular Formula | C24H33N3O5S |
| Molecular Weight | 475.60 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Ampicillin Standards
- Ampicillin EP Impurity E (CAS 1207726-28-0)
- Ampicillin EP Impurity I (CAS 10001-82-8)
- Ampicillin Impurity 103 (CAS CATO-C4X-1443103)
- Ampicillin Impurity 73 (CAS CATO-C4X-144373)
- Ampicillin Impurity 29 (CAS CATO-C4X-144329)
- Ampicillin Impurity 78 (CAS CATO-C4X-144378)
- Ampicillin Impurity 91 (CAS CATO-C4X-144391)
- Ampicillin Impurity 84 (CAS CATO-C4X-144384)
Recommended Standards
- 8-((4-Fluorophenyl)sulfonyl)-2-(4-methoxyphenyl)-3-(propylthio)-1,4,8-triazaspiro[4.5]deca-1,3-diene (CAS 932549-54-7)
- 2-(2-(1H-Benzo[d][1,2,3]triazol-1-yl)-N-(4-ethylphenyl)acetamido)-N-(tert-butyl)-2-(thiophen-3-yl)acetamide (CAS 1033044-91-5)
- 2-{[(2,5-dimethylphenyl)methyl]sulfanyl}-6,7-dimethoxy-3-[(4-methoxyphenyl)methyl]-3,4-dihydroquinazolin-4-imine (CAS 439096-24-9)
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- Dopamine Impurity 18 (CAS 5663-56-9)
- Vericiguat Impurity 99 (CAS CATO-C4X-289699)
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Why CATO?
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