Paclitaxel Impurity 47 CAS 849831-77-2
| CAS No. | 849831-77-2 |
| Molecular Formula | C16H13NO3 |
| Molecular Weight | 267.28 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Paclitaxel Impurity 47 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
CATO supplies Paclitaxel Impurity 47 (CAS 849831-77-2), a pharmacopoeial impurity reference standard (molecular formula C16H13NO3, MW 267.28 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Paclitaxel Impurity 47 (C16H13NO3) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 267.28 g/mol, it falls into the medium-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
Physical & Chemical Properties
| Molecular Formula | C16H13NO3 |
| Molecular Weight | 267.28 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 chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; 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.) | 1987 |
| Nitrogen Atoms | 1 |
Related Paclitaxel Standards
- Paclitaxel Impurity N3 (CAS 163594-75-0)
- Paclitaxel Impurity N1 (CAS 132201-33-3)
- Paclitaxel Impurity 12 (CAS 4522-04-7)
- Paclitaxel Impurity 28 (CAS 32981-85-4)
- Paclitaxel Impurity 25 (CAS 153433-80-8)
- Paclitaxel Impurity N2 (CAS 337515-55-6)
- Paclitaxel Impurity 63 (CAS 959032-68-9)
- Paclitaxel side chain acid (CAS 949023-16-9)
Recommended Standards
- Voglibose Impurity 25 (CAS CATO-C4X-178025)
- Dopamine Impurity 103 (CAS CATO-C4X-1908103)
- Voglibose Impurity 13 (CAS CATO-C4X-178013)
- Crisaborole Impurity 54 (CAS 2990481-66-6)
- Baloxavir Impurity 17 (CAS 2136287-65-3)
- Docetaxel Impurity 90 (CAS CATO-C4X-161990)
- Canagliflozin Impurity 88 (CAS CATO-C4X-112388)
- Glycyrrhizic Acid Impurity 25 (CAS CATO-C4X-253725)
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- Di-n-butyldineodecanoatetin (CAS 25168-22-3)
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- Cycloheptanesulfonyl chloride (CAS 187143-10-8)
- 1-(2-Methoxy-5-nitrobenzyl)pyrrolidin-2-onehydrochloride (CAS 1332531-50-6)
- Neuropeptide Y (2-36) (human, rat) trifluoroacetate salt (CAS 123139-39-9)
Why CATO?
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