Cefprozil EP Impurity K-Isomer 2 CAS CATO-C4X-149222
| CAS No. | CATO-C4X-149222 |
| Molecular Formula | C18H19N3O5S |
| Molecular Weight | 389.43 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
CATO supplies Cefprozil EP Impurity K-Isomer 2 (CAS CATO-C4X-149222), a pharmacopoeial impurity reference standard (molecular formula C18H19N3O5S, MW 389.43 g/mol) used for the identification and quantification of trace impurities in APIs.
Cefprozil EP Impurity K-Isomer 2 (C18H19N3O5S) 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).
CATO manufactures Cefprozil EP Impurity K-Isomer 2 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 | C18H19N3O5S |
| Molecular Weight | 389.43 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Cefprozil Standards
- Cefprozil Impurity N1(Z-Cefprozil) (CAS 121412-77-9)
- Cefprozil (CAS 92665-29-7)
- Cefprozil Δ3 Isomer (CAS 1000980-59-5)
- Cefprozil EP Impurity K-Isomer 1 (CAS CATO-C4X-149216)
- Cefprozil (E)-Isomer (CAS 92676-86-3)
- Cefprozil EP Impurity K-Isomer 3 (CAS CATO-C4X-149223)
- Cefprozil EP Impurity K-Isomer 4 (CAS CATO-C4X-149224)
- Cefprozil EP Impurity K Mixture(Isomer 1,2,3,4) (CAS CATO-C4X-149226)
Recommended Standards
- Tert-butyl (R)-3-(2-((4,4,4-trifluorobutyl)sulfonyl)ethyl)morpholine-4-carboxylate (CAS 2306246-54-6)
- Cefprozil Impurity 35 (CAS CATO-C4X-149235)
- n-(5-Amino-4-(benzo[d]thiazol-2-yl)-3-oxo-2,3-dihydro-1h-pyrrol-1-yl)-1h-indole-3-carboxamide (CAS 380561-38-6)
- Cefprozil (Z)-Isomer Impurity 44 (CAS CATO-C4X-149244)
- Aripiprazole Impurity 17 (CAS 1424857-89-5)
- Zolmitriptan Impurity 40 (CAS CATO-C4X-135140)
- Salbutamol Impurity 113 (CAS CATO-C4X-1176113)
- tert-Butyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxa-borolan-2-yl) phenyl carbonate (CAS 480438-74-2)
- Tert-butyl 3-hydroxy-6-methyl-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate (CAS 2157439-00-2)
- 7-(Bromomethyl)-1H-indazole (CAS 1934906-06-5)
- N2-(tert-Butyl)-6-chloro-N4-(o-tolyl)-1,3,5-triazine-2,4-diamine (CAS 299929-73-0)
- 2-Amino-6-methyl-4,5,6,7-tetrahydro-benzo[b]thiophene-3-carboxylic acid amide (CAS 95211-68-0)
- 2,2'-(Ethane-1,2-diylbis(oxy))diphenol (CAS 20115-81-5)
- Uremic Pentapeptide (CAS 71494-20-7)
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