Tofacitinib Impurity 37 CAS 1252883-90-1
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 1252883-90-1 |
| Molecular Formula | C20H25N5 |
| Molecular Weight | 335.45 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
High-purity Tofacitinib Impurity 37 (CAS 1252883-90-1) pharmacopoeial impurity standards reference standard. Molecular formula: C20H25N5. Molecular weight: 335.45 g/mol. Produced by CATO, one of China's leading reference material manufacturers, with COA documentation and global shipping.
Physical & Chemical Properties
| Molecular Formula | C20H25N5 |
| Molecular Weight | 335.45 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 5 |
Related Tofacitinib Standards
- Tofacitinib Impurity 228 (CAS CATO-C4X-1079228)
- Tofacitinib Impurity 38 (CAS 1092578-45-4)
- Tofacitinib Impurity 39 (CAS 2459302-80-6)
- Tofacitinib Impurity 4 (CAS 477600-73-0)
- Tofacitinib Impurity 162 (CAS CATO-C4X-1079162)
- Tofacitinib Impurity 65 (CAS CATO-C4X-107965)
- Tofacitinib Impurity 32 (CAS CATO-C4X-107932)
- Tofacitinib Impurity 238 (CAS CATO-C4X-1079238)
Recommended Standards
- N-(1-benzyl-4-methylpiperidin-3-yl)-N-methyl-7H-pyrrolo[2,3-d]pyrimidin-4-amine (CAS 384337-90-0)
- 2-Amino-6-(naphthalen-2-ylthio)quinazoline-4(1H)-thione (CAS 52978-99-1)
- 2-(Difluoromethyl)-5-fluoro-4-iodopyridine-3-carbonyl chloride (CAS 1807135-11-0)
- Glycerol Impurity 42 (CAS 25664-08-8)
- Sertraline Impurity 29 (CAS 36159-73-6)
- Beclometasone Dipropionate Monohydrate EP Impurity F (CAS 887130-69-0)
- Beraprost Impurity 13 (CAS CATO-C4X-218413)
- Tobramycin Impurity 28 (CAS CATO-C4X-220028)
- 4-[(3,4-Difluorobenzoyl)Amino]-5-(3-Methoxypropyl-Pentylamino)-5-Oxopentanoic Acid (CAS 111106-23-1)
- (Des-Thr7)-Glucagon trifluoroacetate salt (CAS 1802078-28-9)
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