Amoxicillin Impurity N5 CAS 68728-47-2
| CAS No. | 68728-47-2 |
| Molecular Formula | C16H20N3O6S |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Amoxicillin Impurity N5 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.
CATO supplies Amoxicillin Impurity N5 (CAS 68728-47-2), a pharmacopoeial impurity reference standard (molecular formula C16H20N3O6SNa, MW 405.40 g/mol) used for the identification and quantification of trace impurities in APIs.
Amoxicillin Impurity N5 (C16H20N3O6SNa) 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 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 | C16H20N3O6S Na |
| Molecular Weight | 405.40 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) | 8.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1976 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Amoxicillin Standards
- rac-Amoxicillin EP Impurity H (CAS 106644-43-3)
- Amoxicillin EP impurity D2-2 (CAS 107437-40-1)
- Amoxicillin EP Impurity F (CAS 126247-63-0)
- Amoxicillin Impurity 50 (CAS 127369-30-6)
- Amoxicillin Impurity 17 (CAS 1313237-94-3)
- Amoxicillin EP Impurity E (CAS 1356020-01-3)
- Amoxicillin-13C2,15N (Mixture of Diastereomers) (CAS 1357002-99-3)
- Amoxicillin EP Impurity D Na (CAS 1642559-71-4)
Recommended Standards
- Tryptophan EP Impurity E (CAS 3978-11-8)
- N-Nitroso Cinacalcet Impurity 4 (CAS CATO-C4X-105974)
- Azostatin Impurity 43 (CAS CATO-C4X-139643)
- 6-chloro-2-methoxypyridine-3-sulfonyl chloride (CAS 1261663-47-1)
- (S)-4-(3-Fluoro-2-formylphenyl)-1-(tert-butoxy-carbonyl)piperazine-2-carboxylic acid 1786524-51-3 (CAS 1786524-51-3)
- Ethyl 4-(2-((4-ethoxyphenyl)amino)-2-oxoethoxy)-6-oxo-1-(p-tolyl)-1,6-dihydropyridazine-3-carboxylate (CAS 899729-77-2)
- 3,3,3-Trifluoropropanoyl 3,3,3-trifluoropropanoate (CAS 58668-07-8)
- 1-(p-Tolyl)-2-propyn-1-ol (CAS 7342-07-6)
- N-Methylchloromethanesulfonamide (CAS 41881-81-6)
- Insulin Degludec Impurity 9 (CAS CATO-C4X-21579)
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