Cephalexin Impurity 35 CAS CATO-C4X-126135
| CAS No. | CATO-C4X-126135 |
| Molecular Formula | C11H16O3S |
| Molecular Weight | 228.31 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.
CATO supplies Cephalexin Impurity 35 (CAS CATO-C4X-126135), a pharmacopoeial impurity reference standard (molecular formula C11H16O3S, MW 228.31 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, Cephalexin Impurity 35 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 228.31 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
CATO manufactures Cephalexin Impurity 35 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 | C11H16O3S |
| Molecular Weight | 228.31 g/mol |
| Purity | >95% |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Sulfur Atoms | 1 |
Related Cephalexin Standards
- Cephalexin Impurity 28 (CAS 142975-48-2)
- Cephalexin Impurity 27 (CAS CATO-C4X-126127)
- Cephalexin Impurity 34 (CAS CATO-C4X-126134)
- Cephalexin Impurity 33 (CAS 883835-57-2)
- Cephalexin Impurity 20 (CAS CATO-C4X-126120)
- Cephalexin Impurity 12 (CAS 65870-52-2)
- Cephalexin Impurity 18 (CAS 34632-04-7)
- Cephalexin Impurity 25 (CAS CATO-C4X-126125)
Recommended Standards
- Bortezomib Impurity 41 (CAS 4664-57-7)
- Cycloserine Impurity 1 (CAS CATO-C4X-22641)
- Isobutyl p-methyl Benzenesulfonic acid (CAS 4873-56-7)
- Dotinurad Impurity 53 (CAS CATO-C4X-249453)
- Pidotimod Impurity 11 (CAS CATO-C4X-107811)
- Domperidone Impurity 11 (CAS 85443-52-3)
- Coumarin 102 Impurity 5 (CAS CATO-C4X-24335)
- Pyrimidin-5-ylzinc bromide, 0.50 M in THF (CAS 1227941-02-7)
- Dimethyl 3-(cyanomethlene)pentanedioate (CAS 1709-25-7)
- 1-(2-Chloro-4-nitrophenyl)azepane (CAS 1260897-00-4)
- 5,6,7,8-Tetrahydropyrido[4,3-d]pyrimidine Hydrochloride (CAS 210538-68-4)
- 2-(3-Methyl-6-oxopyridazin-1(6H)-yl)-N-(2-phenoxyethyl)acetamide (CAS 1235049-19-0)
- 1-(2-Methyl-5-phenyl-4,5-dihydrofuran-3-yl)ethanone (CAS 13463-61-1)
- Met(O)14-Exenatide trifluoroacetate salt (CAS 1678417-38-3)
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