Cetirizine Impurity 36 CAS CATO-C4X-158236
| CAS No. | CATO-C4X-158236 |
| Molecular Formula | C19H24N2O2 |
| Molecular Weight | 312.41 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 312.41 g/mol gives Cetirizine Impurity 36 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies Cetirizine Impurity 36 (CAS CATO-C4X-158236), a pharmacopoeial impurity reference standard (molecular formula C19H24N2O2, MW 312.41 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Cetirizine Impurity 36 (C19H24N2O2) contains a steroid core, an amide 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 312.41 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), Cetirizine 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 | C19H24N2O2 |
| Molecular Weight | 312.41 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 2 |
Related Cetirizine Standards
- Cetirizine Impurity 35 (CAS CATO-C4X-158235)
- Cetirizine Impurity Y (CAS 34605-45-3)
- Cetirizine EP Impurity G (CAS 109806-71-5)
- Cetirizine Impurity 26 (CAS CATO-C4X-158226)
- Cetirizine EP Impurity A (CAS 303-26-4)
- Cetirizine impurity N1 (CAS 58023-19-1)
- Cetirizine Impurity 22 (CAS 13391-38-3)
- Cetirizine Dihydrochloride EP Impurity B (CAS 942193-17-1)
Recommended Standards
- Netupitant Impurity 5 (CAS CATO-C4X-12235)
- N-Nitroso Tolterodine EP Impurity E (CAS 2680528-95-2)
- Netupitant Impurity 3 (CAS CATO-C4X-12233)
- Peramivir Impurity 62 (CAS 229614-93-1)
- Carboxyamidotriazole Impurity 3 HCl (CAS CATO-C4X-21593)
- Tirofiban Impurity 42 (CAS 142374-01-4)
- Cinepazide Impurity 3 (CAS CATO-C4X-18153)
- Flomoxef Impurity 41 (CAS CATO-C4X-138241)
- 2-Amino-6-methoxynicotinaldehyde (CAS 678138-43-7)
- Methyl 2,2-bis((methoxycarbonyl)amino)acetate (CAS 60794-51-6)
- N-(6-Amino-1-butyl-3-(2-fluorobenzyl)-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-5-yl)-2-(4-(N-(pyridin-2-yl)sulfamoyl)phenyl)acetamide (CAS 748149-28-2)
- Sodium Valproate Impurity 42 (CAS 258264-00-5)
- 1-Benzyl-3,3-bis(chloromethyl)azetidine hydrochloride (CAS 1820684-39-6)
- Semaglutide impurity 83 (CAS CATO-C4X-222683)
Why CATO?
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- 130,000+ catalog items in stock, COA supplied with every batch
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