Ampicillin Impurity 79 CAS CATO-C4X-144379
| CAS No. | CATO-C4X-144379 |
| Molecular Formula | C15H16N2O4S |
| Molecular Weight | 320.36 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Ampicillin Impurity 79 (CAS CATO-C4X-144379), a pharmacopoeial impurity reference standard (molecular formula C15H16N2O4S, MW 320.36 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of Ampicillin Impurity 79 (C15H16N2O4S) is characterized by a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 manufactures Ampicillin Impurity 79 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C15H16N2O4S |
| Molecular Weight | 320.36 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 | 2 |
| Sulfur Atoms | 1 |
Related Ampicillin Standards
- Ampicillin EP Impurity F (CAS 2197189-82-3)
- Ampicillin Impurity 23 (CAS CATO-C4X-144323)
- Ampicillin Impurity 68 (CAS CATO-C4X-144368)
- Ampicillin EP Impurity J (CAS 6489-58-3)
- Ampicillin Impurity 81 (CAS CATO-C4X-144381)
- Ampicillin impurity 65 (CAS 55675-51-9)
- Ampicillin Impurity 77 (CAS CATO-C4X-144377)
- Ampicillin Impurity 46 (CAS CATO-C4X-144346)
Recommended Standards
- Palbociclib Impurity 69 (CAS 6163-63-9)
- Oseltamivir Impurity 76 (CAS 204254-84-2)
- 2-Amino-5-(4-methoxyphenylcarbamoyl)-4-methyl thiophene-3-carboxylic acid methyl ester 2-amino-5-(4-methoxy-phenylcarbamoyl)-4-methyl-thiophene-3-carboxylic acid methyl ester 2-amino-5-(4-methoxyphenylcarbamoyl)-4-methylthiophene-3-carboxylic acid methyl ester 350996-96-2 methyl 2-amino-5-([(4-methoxyphenyl)amino]-carbonyl)-4-methylthiophene-3-carboxylate (CAS 350996-96-2)
- Ruxolitinib Impurity 207 (CAS 1809535-64-5)
- Iguratimod Impurity 58 (CAS CATO-C4X-182658)
- Naphazoline EP Impurity D (CAS 22126-67-6)
- Canagliflozin Peroxide Impurity in CH3CN/H2O (CAS CATO-C4X-112333)
- 6,7-Dihydrothieno[3,2-c]pyridine (CAS 107112-93-6)
- N-(3-(1H-Pyrrolo[2,3-b]pyridin-1-yl)propyl)-4-oxo-4-phenylbutanamide (CAS 1448141-79-4)
- 6-Methyl-4-(trifluoromethyl)picolinaldehyde (CAS 451459-25-9)
- 7-Chloro-2,3,4,5-tetrahydro-1H-1,5-ethanobenzo[d]azepine (CAS 832089-02-8)
- tert-Butyl (R)-2-(2-chloroacetyl)piperidine-1-carboxylate (CAS 1260606-86-7)
- Atosiban Impurity 5 (CAS 960411-86-3)
- D-allo-Thr5-Semaglutide (CAS CATO-C4X-2226243)
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