Parecoxib Impurity 38 CAS CATO-C4X-159138
| CAS No. | CATO-C4X-159138 |
| Molecular Formula | C22H23N3O7S2 |
| Molecular Weight | 505.56 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of Parecoxib Impurity 38 (C22H23N3O7S2) is characterized by a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Parecoxib Impurity 38 (CAS CATO-C4X-159138) is a certified pharmaceutical impurity reference standard with the molecular formula C22H23N3O7S2 and a molecular weight of 505.56 g/mol.
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), Parecoxib Impurity 38 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 | C22H23N3O7S2 |
| Molecular Weight | 505.56 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 2 |
Related Parecoxib Standards
- Parecoxib sodium Impurity 11 (CAS 1708094-99-8)
- Parecoxib Impurity 27 (CAS CATO-C4X-159127)
- Parecoxib Impurity 44 (CAS 2338845-31-9)
- Parecoxib Impurity 37 (CAS CATO-C4X-159137)
- Parecoxib Impurity 74 (CAS CATO-C4X-159174)
- Parecoxib Impurity 35 (CAS 1373038-63-1)
- Parecoxib Impurity 60 (CAS CATO-C4X-159160)
- Parecoxib Impurity 68 (CAS 1373038-60-8)
Recommended Standards
- Labetalol Impurity 47 (CAS CATO-C4X-246647)
- Fmoc-Suberol (CAS 212783-75-0)
- Benidipine Impurity 29 (CAS CATO-C4X-112029)
- 2,4,6-Tris(4-(1H-imidazol-1-yl)phenyl)pyridine (CAS 2757730-32-6)
- Dasatinib Impurity 75 (CAS CATO-C4X-160775)
- Biotin Impurity 04 (CAS 26339-40-2)
- Lumateperone Impurity 45 (CAS CATO-C4X-220145)
- 6-Methoxy-1-phenyl-1H,2H,3H,4H,9H-pyrido[3,4-b]indole (CAS 5684-66-2)
- 1-(3-Bromobenzyl)piperidin-4-amine (CAS 1018617-44-1)
- Methyl({[3-methyl-1-phenyl-5-(1h-1,2,4-triazol-1-yl)-1h-pyrazol-4-yl]methyl})amine (CAS 1152915-79-1)
- Ethyl 5-chloro-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-pyrazolo[3,4-c]pyridine-3-carboxylate (CAS 2201100-88-9)
- 4-Phenoxybenzonitrile 4-phenoxybenzenecarbonitrile 4-Cyanodiphenyl ether 3096-81-9 (CAS 3096-81-9)
- 2-(Benzyloxy)-5-bromopyrazine (CAS 1208084-90-5)
- Semaglutide impurity 39 (CAS CATO-C4X-222639)
Why CATO?
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