Tamoxifen Citrate - Impurity D CAS 197251-11-9
| CAS No. | 197251-11-9 |
| Molecular Formula | C25H27NO |
| Molecular Weight | 357.49 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Tamoxifen Citrate - Impurity D (CAS 197251-11-9), a certified reference material (molecular formula C25H27NO, MW 357.49 g/mol) for analytical method development and quality control.
Structurally, Tamoxifen Citrate - Impurity D (C25H27NO) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 13.0, corresponding to approximately 13 ring(s) or double-bond equivalent(s). With a molecular weight of 357.49 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.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
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.
Physical & Chemical Properties
| Molecular Formula | C25H27NO |
| Molecular Weight | 357.49 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2013 |
| Nitrogen Atoms | 1 |
Related Tamoxifen Standards
- Tamoxifen EP Impurity F (CAS 31750-48-8)
- Tamoxifen EP Impurity D (Mixture of Z and E Isomers) (CAS 31750-45-5)
- Tamoxifen Impurity 23 (CAS CATO-C4X-123323)
- Tamoxifen 2-Isomer (CAS 7728-73-6)
- Tamoxifen EP Impurity A (CAS 13002-65-8)
- Tamoxifen Impurity 29 (CAS CATO-C4X-123329)
- Tamoxifen EP Impurity E (Mixture of Z and E Isomers) (CAS CATO-C4X-12336)
- Tamoxifen (CAS 10540-29-1)
Recommended Standards
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