Tofacitinib Impurity 143 CAS 1206875-41-3
Purity 97%+In StockPharmacopoeial Impurity Standards
| CAS No. | 1206875-41-3 |
| Molecular Formula | C15H22N2O2 |
| Molecular Weight | 262.35 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Tofacitinib Impurity 143 (CAS 1206875-41-3) is a high-purity pharmacopoeial impurity standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C15H22N2O2. Molecular weight: 262.35 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C15H22N2O2 |
| Molecular Weight | 262.35 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 2 |
Related Tofacitinib Standards
- Tofacitinib Impurity 74 (CAS CATO-C4X-107974)
- Tofacitinib Impurity 69 (CAS CATO-C4X-107969)
- Tofacitinib Impurity 166 (CAS 923036-28-6)
- Tofacitinib Impurity 11 (CAS 2227197-38-6)
- Tofacitinib Impurity 248 (CAS CATO-C4X-1079248)
- Tofacitinib Impurity 71 (CAS 134965-85-8)
- Tofacitinib Impurity 22 (CAS 2227199-28-0)
- Tofacitinib Impurity 111 (CAS 2183519-70-0)
Recommended Standards
- tert-butyl (4,6-dimethylisoindolin-5-yl)carbamate (CAS CATO-C3D-263260)
- Roxatidine Impurity 14 (CAS CATO-C4X-121314)
- tert-butyl (4,6-dimethylindolin-5-yl)carbamate (CAS CATO-C3D-263257)
- Papaverine impurity 23 (CAS CATO-C4X-206723)
- Olodaterol Impurity 22 (CAS CATO-C4X-194322)
- 2-Methoxy-5-(2H-tetrazol-5-yl)aniline (CAS 383870-78-8)
- tert-Butyl 5-iodo-2,3-dihydro-1H-pyrido[3,4-b][1,4]oxazine-1-carboxylate (CAS 1198426-57-1)
- 1-{1-[(2-chloro-4-fluorophenyl)methyl]piperidin-4-yl}-2,3-dihydro-1h-1,3-benzodiazol-2-one (CAS 909682-49-1)
- Pyrrolidine-2,5-dicarboxylic acid (CAS 72000-65-8)
- Anxiety Peptide (CAS 95237-86-8)
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