Tofacitinib Impurity 9 CAS 2250243-18-4
Purity 97%+In StockPharmacopoeial Impurity Standards
| CAS No. | 2250243-18-4 |
| Molecular Formula | C13H18ClN5 |
| Molecular Weight | 279.77 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Tofacitinib Impurity 9 (CAS 2250243-18-4) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C13H18ClN5. Molecular weight: 279.77 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C13H18ClN5 |
| Molecular Weight | 279.77 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1998 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 5 |
Related Tofacitinib Standards
- Tofacitinib Impurity 230 (CAS CATO-C4X-1079230)
- Tofacitinib Impurity 5 (CAS 1616760-97-4)
- Tofacitinib Nitroso Impurity 188 (CAS CATO-C4X-1079188)
- Tofacitinib Impurity N48 (CAS 1638499-35-0)
- Tofacitinib Nitroso Impurity 187 (CAS CATO-C4X-1079187)
- Tofacitinib Impurity 242 (CAS CATO-C4X-1079242)
- Tofacitinib Impurity 158 (CAS CATO-C4X-1079158)
- Tofacitinib Impurity 203 (CAS CATO-C4X-1079203)
Recommended Standards
- 1-cyclopentanecarbonylpiperidine-3-sulfonyl chloride (CAS 1461705-97-4)
- 2-Chloro-n-cyclopentyl-n-(1,1-dioxo-1lambda6-thiolan-3-yl)acetamide (CAS 854137-78-3)
- 6-((7-Chloroquinazolin-4-yl)amino)hexan-1-ol (CAS 5427-36-1)
- Olaparib Impurity 161 (CAS CATO-C4X-1135161)
- Ziprasidone Impurity 27 (CAS CATO-C4X-124027)
- 4-Oxo-4H-chromen-7-yl methanesulfonate (CAS 2097914-73-1)
- 5-Cyclopropoxy-4-methylnicotinonitrile (CAS 1243411-63-3)
- 4,6-Diamino-5-benzeneazo-2-methylpyrimidine (CAS 5473-05-2)
- 3-Cyclopropoxy-5-formylpicolinic acid (CAS 1243344-85-5)
- Fragment-[9-31]-Semaglutide (CAS CATO-C4X-2226181)
Why CATO?
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