EtoricoxiB impurity 16 CAS 90536-66-6
| CAS No. | 90536-66-6 |
| Molecular Formula | C9H10O4S |
| Molecular Weight | 214.24 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
EtoricoxiB impurity 16 (C9H10O4S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO supplies EtoricoxiB impurity 16 (CAS 90536-66-6), a pharmacopoeial impurity reference standard (molecular formula C9H10O4S, MW 214.24 g/mol) used for the identification and quantification of trace impurities in APIs.
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), EtoricoxiB impurity 16 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 | C9H10O4S |
| Molecular Weight | 214.24 g/mol |
| Purity | >95% |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1982 |
| Sulfur Atoms | 1 |
Related EtoricoxiB Standards
- Etoricoxib Impurity 3 (CAS 90584-68-2)
- Etoricoxib Impurity 31 (CAS 93629-02-8)
- Etoricoxib impurity 69 (CAS 300355-18-4)
- Etoricoxib Impurity 4 (CAS 4052-30-6)
- Etoricoxib Impurity 37 (CAS 118362-28-0)
- Etoricoxib Impurity 3 (CAS 10297-73-1)
- Etoricoxib Impurity 73 (CAS 1937252-96-4)
- Etoricoxib impurity 68 (CAS 58058-86-9)
Recommended Standards
- 3-Methylphenylsulfonylurea (CAS CATO-C3D-3168)
- Ethyl 2-(methylthio)-6-oxo-1,6-dihydropyrimidine-5-carboxylate (CAS 53554-29-3)
- Tolbutamide EP Impurity B (CAS 1694-06-0)
- Cefradine Impurity 28 (CAS 220275-58-1)
- Daprodustat Impurity 11 (CAS 7150-63-2)
- Quetiapine Impurity 10 (CAS CATO-C4X-124410)
- Mitiglinide Impurity 10 (CAS CATO-C4X-116110)
- 3-(((Benzyloxy)carbonyl)amino)-2,2,3-trimethylbutanoic acid (CAS 32097-54-4)
- N-((1H-Benzo[d]imidazol-2-yl)methyl)thiophene-3-carboxamide (CAS 1060902-45-5)
- 3-(2-Methanesulfonylethoxy)aniline (CAS 1184567-84-7)
- (2E)-3-[(4-Chlorophenyl)amino]-1-{4-[(2,4-dichlorophenyl)methoxy]phenyl}prop-2-en-1-one (CAS 477889-40-0)
- tert-butyl (S)-3-mercaptopyrrolidine-1-carboxylate (CAS 156371-85-6)
- N,N'-(Phenazine-2,3-diyl)bis(5-chloro-2-methoxybenzamide) (CAS 108112-57-8)
- Semaglutide Impurity 2 (CAS CATO-C4X-22262)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com