Cephalexin Impurity 7 (Mixture Of Isomers) CAS 59865-11-1
| CAS No. | 59865-11-1 |
| Molecular Formula | C16H17N3O4S |
| Molecular Weight | 347.39 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.
Cephalexin Impurity 7 (Mixture Of Isomers) (CAS 59865-11-1) is a certified pharmaceutical impurity reference standard with the molecular formula C16H17N3O4S and a molecular weight of 347.39 g/mol.
Owing to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Cephalexin Impurity 7 (Mixture Of Isomers) is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 347.39 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO manufactures Cephalexin Impurity 7 (Mixture Of Isomers) 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 | C16H17N3O4S |
| Molecular Weight | 347.39 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1974 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Cephalexin Standards
- Cephalexin Impurity 12 (CAS 65870-52-2)
- Cephalexin Impurity 18 (CAS 34632-04-7)
- Cephalexin Impurity 25 (CAS CATO-C4X-126125)
- Cephalexin-d5 (CAS CATO-C4X-12611)
- Cephalexin-d5 (CAS 2101505-56-8)
- Cephalexin Impurity 15 (CAS 36114-06-4)
- Cephalexin Oxide Impurity 1 (CAS 56193-21-6)
- Cephalexin Sulfoxide Impurity 31 (CAS 74708-55-7)
Recommended Standards
- Cefalexin EP Impurity F (CAS 79750-46-2)
- Cefaclor EP Impurity G-Isomer 1 (CAS 67308-21-8)
- Topramezone Impurity 2 (CAS CATO-C4X-35032)
- Cefalexin (CAS 15686-71-2)
- Voglibose Impurity N7 (CAS 1384518-63-1)
- Dopamine Impurity 98 (CAS CATO-C4X-190898)
- Cinitapride Impurity N65 (CAS 59338-84-0)
- N-[4-(2,4,6-Trimethylphenyl)-2-thiazolyl]-4-pyridinecarboxamide (CAS 849513-58-2)
- Tert-butyl 2-(4-fluorophenyl)-4-oxo-1,3,8-triazaspiro[4.5]Dec-2-ene-8-carboxylate (CAS 1707713-85-6)
- 4-Amino-3-isopropylbenzonitrile (CAS 760924-87-6)
- (3'-Amino-[1,1'-biphenyl]-3-yl)methanol (CAS 208941-45-1)
- Methyl 3-bromo-1-(4-fluorophenyl)-1H-indazole-6-carboxylate (CAS 1416373-22-2)
- Chlorobis(4-(trifluoromethyl)phenyl)phosphane (CAS 13685-24-0)
- Des-Gln19-Tirzepatide (CAS CATO-CPTD788954)
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