Dapoxetine Impurity 9 CAS 119357-39-0
| CAS No. | 119357-39-0 |
| Molecular Formula | C21H23NO |
| Molecular Weight | 305.41 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Dapoxetine Impurity 9 (CAS 119357-39-0) is a certified pharmaceutical impurity reference standard with the molecular formula C21H23NO and a molecular weight of 305.41 g/mol.
Structurally, Dapoxetine Impurity 9 (C21H23NO) contains a steroid core, 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 305.41 g/mol, it falls into the moderately-high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C21H23NO |
| Molecular Weight | 305.41 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| 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.) | 1991 |
| Nitrogen Atoms | 1 |
Related Dapoxetine Standards
- Dapoxetine Impurity 102 (CAS 119356-77-3)
- Dapoxetine Impurity 103 (CAS 1135682-44-8)
- Dapoxetine Impurity 29 (CAS CATO-C4X-143929)
- Dapoxetine Impurity 88 (CAS CATO-C4X-143988)
- Dapoxetine Impurity 92 (CAS CATO-C4X-143992)
- Dapoxetine RC 2 (CAS 1776071-89-6)
- Dapoxetine Impurity 32 (CAS CATO-C4X-143932)
- Dapoxetine Impurity 40 (CAS CATO-C4X-143940)
Recommended Standards
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- Sodium 2-(2-trifluoromethyl-phenyl)-thiazole-5-carboxylic acid (CAS 2204912-95-6)
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- 2-Ethoxy-3-isopropylpyrazine (CAS 72797-16-1)
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- 8-Bromo-2-(methylthio)pyrido[4,3-d]pyrimidin-4(3H)-one (CAS 1709905-39-4)
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