Tofacitinib Impurity 53 CAS 479633-63-1
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 479633-63-1 |
| Molecular Formula | C13H10ClN3O2S |
| Molecular Weight | 307.76 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Tofacitinib Impurity 53 (CAS 479633-63-1), a pharmacopoeial impurity standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C13H10ClN3O2S. Molecular weight: 307.76 g/mol. Batch-specific COA and technical support are available on request.
Physical & Chemical Properties
| Molecular Formula | C13H10ClN3O2S |
| Molecular Weight | 307.76 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Tofacitinib Standards
- Tofacitinib Nitroso Impurity 189 (CAS CATO-C4X-1079189)
- Tofacitinib Impurity 236 (CAS CATO-C4X-1079236)
- Tofacitinib Impurity 237 (CAS CATO-C4X-1079237)
- Tofacitinib Impurity 176 (CAS CATO-C4X-1079176)
- Tofacitinib Impurity 204 (CAS CATO-C4X-1079204)
- (Rac)-Tofacitinib (CAS 1259404-17-5)
- Tofacitinib Impurity 1 (CAS 1092578-46-5)
- Tofacitinib Impurity 2 (CAS 1092578-48-7)
Recommended Standards
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- Nemonoxacin Impurity 83 (CAS CATO-C4X-312883)
- Brimonidine Impurity 42 (CAS CATO-C4X-156642)
- 2-(1,1-Dioxidotetrahydro-2H-thiopyran-4-yl)thiazole-4-carboxylic acid (CAS 955400-85-8)
- 3-Methoxy-4-(4-methyl-1-imidazolyl)aniline (CAS 958245-18-6)
- N1-(2,4-Dinitrophenyl)ethane-1,2-diamine (CAS 28767-75-1)
- 4-[(1,3-benzothiazol-2-yl)amino]butanoic acid (CAS 104344-78-7)
- Staphylococcus Aureus Protein A (SpA)-Derived Peptide (H-2228.0005) (CAS 144979-26-0)
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 13829788188 / jacky.chen@cato-chem.com