Repaglinide Impurity 24 CAS 637301-29-2
| CAS No. | 637301-29-2 |
| Molecular Formula | C22H28N2O4 |
| Molecular Weight | 384.47 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 Repaglinide Impurity 24 (CAS 637301-29-2), a pharmacopoeial impurity reference standard (molecular formula C22H28N2O4, MW 384.47 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, Repaglinide Impurity 24 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 384.47 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).
As a certified reference material (CRM), Repaglinide Impurity 24 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 | C22H28N2O4 |
| Molecular Weight | 384.47 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Nitrogen Atoms | 2 |
Related Repaglinide Standards
- Repaglinide Impurity IV (CAS 646054-50-4)
- Repaglinide Impurity 11 (CAS CATO-C4X-118611)
- Repaglinide Impurity 29 (CAS CATO-C4X-118629)
- Repaglinide Impurity 15 (CAS 1809091-07-3)
- Repaglinide Impurity 21 (CAS CATO-C4X-118621)
- Repaglinide Impurity 22 (CAS CATO-C4X-118622)
- Repaglinide Impurity 26 (CAS 791812-92-5)
- Repaglinide Impurity 18 (CAS CATO-C4X-118618)
Recommended Standards
- (S)-propane-1,2-diyl bis(4-methylbenzenesulfonate) (CAS 60434-71-1)
- Bisoprolol Impurity 65 (CAS CATO-C4X-124765)
- Vinpocetine Impurity 24 (CAS 52341-36-3)
- Spironolactone Impurity 15 (CAS CATO-C4X-134515)
- Fluralaner Impurity N6 (CAS 1352242-94-4)
- Benzbromarone Impurity 24 (CAS 342415-01-4)
- Lornoxicam impurity 56 (CAS CATO-C4X-201656)
- Ethyl 1-aminocyclobutane-1-carboxylate (CAS 285570-26-5)
- Ethyl 5-(1-hydroxyethyl)isoxazole-3-carboxylate (CAS 78934-71-1)
- Ethyl (2E,4E)-5-(pyridin-3-yl)penta-2,4-dienoate (CAS 78775-01-6)
- 3-Isopropyl-N'-(3-methoxybenzylidene)-1H-pyrazole-5-carbohydrazide (CAS 303106-33-4)
- 2-Fluoro-3-iodo-5-(trifluoromethyl)benzoic acid (CAS 2383044-23-1)
- 4-Bromo-2-isopropoxybenzamide (CAS 1369853-57-5)
- D-Ala35-Tirzepatide (CAS CATO-CPTD788904)
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