Etoricoxib Impurity 8 CAS 646459-39-4
| CAS No. | 646459-39-4 |
| Molecular Formula | C20H21N3O2S |
| Molecular Weight | 367.46 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Etoricoxib Impurity 8 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Etoricoxib Impurity 8 (CAS 646459-39-4) is a certified pharmaceutical impurity reference standard with the molecular formula C20H21N3O2S and a molecular weight of 367.46 g/mol.
Based on its molecular formula C20H21N3O2S, Etoricoxib Impurity 8 contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 367.46 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C20H21N3O2S |
| Molecular Weight | 367.46 g/mol |
| 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Etoricoxib Standards
- Etoricoxib Impurity 34 (CAS CATO-C4X-108034)
- Etoricoxib Impurity 26 (CAS CATO-C4X-108026)
- Etoricoxib D4 (CAS 1131345-14-6)
- Etoricoxib Impurity 10 (CAS 646459-45-2)
- Etoricoxib D3 (CAS 850896-71-8)
- Etoricoxib Impurity 47 (CAS CATO-C4X-108047)
- Etoricoxib Impurity 10 (CAS 349536-41-0)
- Etoricoxib Impurity 1 (CAS 325855-74-1)
Recommended Standards
- 474923-29-0 D-erythro-sphinganine-1-phosphate (C17 base) Sphinganine-1-Phosphate (d17:0) dihydro-D-erythro-sphingosine-1-phosphate (C17 base) sphinganine-1-phosphate (C17 base) (CAS 474923-29-0)
- Glipizide Impurity 47 (CAS CATO-C4X-140747)
- S-(2,2-Dimethyl-4-oxo-3,6,9,12,15-pentaoxa-5-azaheptadecan-17-yl) ethanethioate (CAS 2055040-71-4)
- Tazarotene Sulfoxide (CAS 864841-56-5)
- Nimesulide EP Impurity G (CAS 70995-08-3)
- Febantel EP Impurity A (CAS 92088-58-9)
- Avanafil Impurity 52 (CAS CATO-C4X-111852)
- (R)-2,2,2-TRIFLUORO-1-(NAPHTHALEN-1-YL)ETHAN-1-AMINE HCL (CAS 2241594-40-9)
- 5-[(3-Methylphenoxy)methyl]-2-furohydrazide (CAS 832739-61-4)
- 9-Methyl-4-oxo-2-(piperidin-1-yl)-4H-pyrido[1,2-a]pyrimidine-3-carbaldehyde (CAS 303792-40-7)
- (S)-3-(2,2,2-trifluoroethyl)pyrrolidine (CAS 1430091-57-8)
- n-Allyl-4-(methylsulfonyl)benzamide (CAS 1015665-46-9)
- 6-Chloro-3-(difluoromethyl)-5-fluoropyridin-2-amine (CAS 1804697-87-7)
- Semaglutide Impurity 13 (CAS CATO-C4X-222613)
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