Chlorotamoxifen CAS 77588-46-6
| CAS No. | 77588-46-6 |
| Molecular Formula | C26H28ClNO |
| Molecular Weight | 405.96 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| 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.
Chlorotamoxifen (CAS 77588-46-6), molecular formula C26H28ClNO and molecular weight 405.96 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, Chlorotamoxifen is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 405.96 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C26H28ClNO |
| Molecular Weight | 405.96 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light |
| 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1979 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Recommended Standards
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- 1-(Benzyloxy)-4-bromo-5-chloro-2-fluorobenzene (CAS 2586127-60-6)
- 3-(4-Chlorophenyl)-3-{[(9H-fluoren-9-ylmethoxy)-carbonyl]amino}propanoic acid (CAS 194471-87-9)
- Gastrin Tetrapeptide (CAS 1947-37-1)
Why CATO?
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