Paclitaxel Impurity 28 CAS 32981-85-4
Purity 97%+In StockPharmacopoeial Impurity Standards
| CAS No. | 32981-85-4 |
| Molecular Formula | C17H17NO4 |
| Molecular Weight | 299.32 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Paclitaxel Impurity 28 (CAS 32981-85-4) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C17H17NO4. Molecular weight: 299.32 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C17H17NO4 |
| Molecular Weight | 299.32 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1966 |
| Nitrogen Atoms | 1 |
Related Paclitaxel Standards
- Paclitaxel Impurity 12 (CAS 4522-04-7)
- Paclitaxel Impurity N1 (CAS 132201-33-3)
- Paclitaxel Impurity 25 (CAS 153433-80-8)
- Paclitaxel Impurity N3 (CAS 163594-75-0)
- Paclitaxel Impurity 47 (CAS 849831-77-2)
- Paclitaxel Impurity N2 (CAS 337515-55-6)
- Paclitaxel side chain acid (CAS 949023-16-9)
- Paclitaxel Impurity 49 (CAS 2180123-01-5)
Recommended Standards
- Pranoprofen Impurity 76 (CAS CATO-C4X-181176)
- Olodaterol Impurity 11 (CAS CATO-C4X-194311)
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- Tiotropium Bromide Impurity 16 (CAS 6006-81-1)
- Lotilaner Impurity 14 (CAS CATO-C4X-325614)
- 1-(4-{2-[4-(Dibutylamino)Phenyl]Vinyl}Phenyl)-2,2,2-Trifluoroethanone (CAS 192190-91-3)
- ((3-Chlorophenyl)sulfonyl)phenylalanine (CAS 1449132-27-7)
- 1-ethyl-3-propyl-2,3-dihydro-1H-1,3-benzodiazol-2-imine (CAS 487017-58-3)
- trans-4-azidocyclohexanecarboxylic acid (CAS 1931895-14-5)
- ([13C6]Leu14)-Glucagon (1-29) (human, rat, porcine) trifluoroacetate salt (CAS 1802078-39-2)
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