Ampicillin Impurity 39 CAS CATO-C4X-144339
| CAS No. | CATO-C4X-144339 |
| Molecular Formula | C17H21N3O6S |
| Molecular Weight | 395.43 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 Ampicillin Impurity 39 (CAS CATO-C4X-144339), a pharmacopoeial impurity reference standard (molecular formula C17H21N3O6S, MW 395.43 g/mol) used for the identification and quantification of trace impurities in APIs.
Ampicillin Impurity 39 (C17H21N3O6S) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
As a certified reference material (CRM), Ampicillin Impurity 39 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 | C17H21N3O6S |
| Molecular Weight | 395.43 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Ampicillin Standards
- Ampicillin Impurity 84 (CAS CATO-C4X-144384)
- Ampicillin Impurity 91 (CAS CATO-C4X-144391)
- Ampicillin Impurity 92 (CAS CATO-C4X-144392)
- Ampicillin Impurity 87 (CAS CATO-C4X-144387)
- Ampicillin Impurity 103 (CAS CATO-C4X-1443103)
- Ampicillin Impurity 73 (CAS CATO-C4X-144373)
- Ampicillin Impurity 82 (CAS CATO-C4X-144382)
- Ampicillin Impurity 94 (CAS CATO-C4X-144394)
Recommended Standards
- Ilaprazole Impurity 209 (CAS CATO-C4X-1130209)
- Droperidol EP Impurity D (CAS 466118-75-2)
- Ilaprazole Impurity 132 (CAS CATO-C4X-1130132)
- 2-((6-(Adamantan-1-yl)-3-cyano-4-(trifluoromethyl)pyridin-2-yl)thio)acetamide (CAS 488810-89-5)
- Ozagrel Impurity 42 (CAS CATO-C4X-197142)
- Abacavir Impurity N1 (CAS 159832-22-1)
- Miconazole EP Impurity I (CAS 47363-37-1)
- 2'-(2-Chloroanilino)-6'-(dibutylamino)fluoran (CAS 82137-81-3)
- tert-Butyl 4-(hydroxymethyl)benzoate (CAS 143726-85-6)
- 2-Isopropoxy-5-(trifluoromethyl)aniline (CAS 121307-23-1)
- a-D-Mannose-1-phosphate Dipotassium Salt (CAS 71888-67-0)
- Fmoc-Leu-D-Ser(psi(Me,Me)pro)-OH (CAS CATO-CPTD789004)
- 4-Isopropenyltoluene (CAS 1195-32-0)
- Semaglutide impurity 32 (CAS CATO-C4X-222632)
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