Etoricoxib Impurity 85 CAS CATO-C4X-108085
| CAS No. | CATO-C4X-108085 |
| Molecular Formula | C18H17ClN2O3S |
| Molecular Weight | 376.86 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Etoricoxib Impurity 85 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.
CATO supplies Etoricoxib Impurity 85 (CAS CATO-C4X-108085), a pharmacopoeial impurity reference standard (molecular formula C18H17ClN2O3S, MW 376.86 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C18H17ClN2O3S, Etoricoxib Impurity 85 contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 376.86 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
Physical & Chemical Properties
| Molecular Formula | C18H17ClN2O3S |
| Molecular Weight | 376.86 g/mol |
| Purity | ≥95% |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Etoricoxib Standards
- Etoricoxib Impurity 10 (CAS 349536-41-0)
- Etoricoxib Impurity 1 (CAS 325855-74-1)
- Etoricoxib Impurity 24 (CAS 325855-71-8)
- Etoricoxib Impurity 10 (CAS 646459-45-2)
- Etoricoxib Impurity 26 (CAS CATO-C4X-108026)
- Etoricoxib Impurity 34 (CAS CATO-C4X-108034)
- Etoricoxib Impurity 8 (CAS 646459-39-4)
- Etoricoxib Impurity 30 (CAS 349536-39-6)
Recommended Standards
- N-allyl-2-(1-(4-chlorobenzyl)-2-oxo-1,2-dihydropyridine-3-carbonyl)hydrazine-1-carbothioamide (CAS 400074-96-6)
- Abemaciclib impurity 112 (CAS CATO-C4X-2937112)
- N-allyl-2-(1-(3-chlorobenzyl)-2-oxo-1,2-dihydropyridine-3-carbonyl)hydrazine-1-carbothioamide (CAS 242472-26-0)
- ethyl N-[10-(3-chloropropanoyl)phenothiazin-2-yl]carbamate (CAS 34749-22-9)
- Hydroquinone Impurity 3 (CAS CATO-C4X-25983)
- Minoxidil Impurity 68 (CAS CATO-C4X-170068)
- Testosterone EP Impurity L (CAS 2398-99-4)
- Ceftazidime Impurity 82 (CAS CATO-C4X-121282)
- 3-(Fluorosulfonyl)-4-methylbenzoic acid (CAS 21322-93-0)
- N-(4-Fluorophenyl)ethanethioamide (CAS 351-84-8)
- (Z)-Tetradec-9-en-1-ol (CAS 35153-15-2)
- tert-Butyl (2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-5-(trifluoromethyl)phenyl)carbamate (CAS 1186637-37-5)
- methyl 1-methyl-1H-pyrazolo[3,4-c]pyridine-3-carboxylate (CAS 2107524-21-8)
- Acetyl Tetrapeptide-5 (CAS 820959-17-9)
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