Cefprozil EP Impurity K Mixture(Isomer 1,2,3,4) CAS CATO-C4X-149226
| CAS No. | CATO-C4X-149226 |
| Molecular Formula | C18H19N3O5S |
| Molecular Weight | 389.43 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Cefprozil EP Impurity K Mixture(Isomer 1,2,3,4).
Cefprozil EP Impurity K Mixture(Isomer 1,2,3,4) (CAS CATO-C4X-149226) is a certified pharmaceutical impurity reference standard with the molecular formula C18H19N3O5S and a molecular weight of 389.43 g/mol.
Based on its molecular formula C18H19N3O5S, Cefprozil EP Impurity K Mixture(Isomer 1,2,3,4) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 389.43 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 Cefprozil EP Impurity K Mixture(Isomer 1,2,3,4) 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 | >90% |
| 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 2 (CAS CATO-C4X-149222)
- Cefprozil EP Impurity K-Isomer 3 (CAS CATO-C4X-149223)
- Cefprozil EP Impurity K-Isomer 4 (CAS CATO-C4X-149224)
Recommended Standards
- Cefprozil Impurity 35 (CAS CATO-C4X-149235)
- Cefprozil (Z)-Isomer Impurity 44 (CAS CATO-C4X-149244)
- Cefprozil (Z)-isomer Impurity 48 (CAS CATO-C4X-149248)
- Cefprozil Impurity 51 (CAS CATO-C4X-149251)
- Upadacitinib Impurity 219 (CAS CATO-C4X-2405219)
- Hydroxychloroquine impurity 85 (CAS CATO-C4X-183585)
- Sildenafil Impurity 280 (CAS CATO-C4X-1128280)
- 2-Methyl-10,11-dihydro-dibenzo[b,f][1,4]oxazepine (CAS 443749-33-5)
- 1-Phenylpent-4-en-1-ol (CAS 54525-86-9)
- Brexpiprazole Impurity 6 (CAS 1886188-97-1)
- (3S,4R)-1-benzyl-4-(methoxycarbonyl)pyrrolidine-3-carboxylic acid (CAS 2361921-04-0)
- cis-3-[2-(2-Bromophenyl)-2-oxoethyl]-cyclohexane-1-carboxylic acid (CAS 735275-20-4)
- Primaquine EP Impurity C (CAS 90-52-8)
- Tirzepatide Impurity 15 (CAS CATO-C4X-324015)
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