Epalrestat impurity 36 CAS CATO-C4X-223636
| CAS No. | CATO-C4X-223636 |
| Molecular Formula | C15H15NO4S2 |
| Molecular Weight | 337.41 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Epalrestat impurity 36 (CAS CATO-C4X-223636) is a certified pharmaceutical impurity reference standard with the molecular formula C15H15NO4S2 and a molecular weight of 337.41 g/mol.
Structurally, Epalrestat impurity 36 (C15H15NO4S2) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 337.41 g/mol, it falls into the moderately-high-molecular-weight range. 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).
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.
As a certified reference material (CRM), Epalrestat impurity 36 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C15H15NO4S2 |
| Molecular Weight | 337.41 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 2 |
Related Epalrestat Standards
- Epalrestat Impurity 23 (CAS CATO-C4X-223623)
- Epalrestat impurity 48 (CAS CATO-C4X-223648)
- Epalrestat Impurity 16 (CAS CATO-C4X-223616)
- Epalrestat Impurity 62 (CAS 682775-70-8)
- Epalrestat Impurity 12 (CAS CATO-C4X-223612)
- Epalrestat-d5 (CAS 2755644-33-6)
- Epalrestat-d5 (CAS CATO-CCAD303149)
- Epalrestat Impurity 51 (CAS CATO-C4X-223651)
Recommended Standards
- Trospium Impurity 5 (CAS CATO-C4X-20385)
- Boc-D-Tyr (Et) -OEt (CAS 561041-98-3)
- Fulvestrant Impurity 10 (CAS 149051-24-1)
- Olopatadine (CAS 113806-05-6)
- Bosutinib Impurity 27 (CAS CATO-C4X-184727)
- Cephalexin Impurity 42 (CAS 52210-38-5)
- Abiraterone Impurity 59 (CAS CATO-C4X-107059)
- O-Desmethylpimobendan D4 (CAS CATO-C4X-246113)
- 3-Ethoxy-4-hydroxybenzimidamide (CAS 1094339-61-3)
- 3-Propoxypyridine-2-carboxylic acid (CAS 14440-94-9)
- 6-(4-Methylphenylsulfonamido)hexanoic acid (CAS 78521-39-8)
- 1-(2-Methyl-5-nitrophenyl)piperazine (CAS 57644-03-8)
- 2-(3-((1H-Indol-3-yl)methyl)-5-oxopiperazin-1-yl)acetic acid (CAS 1060813-47-9)
- Tirzepatide Impurity 15 (CAS CATO-C4X-324015)
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