cis-Clomiphene CAS 15690-55-8
| CAS No. | 15690-55-8 |
| Molecular Formula | C26H28ClNO |
| Molecular Weight | 405.96 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 405.96 g/mol gives cis-Clomiphene distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
cis-Clomiphene (CAS 15690-55-8) is a high-purity analytical reference standard with the molecular formula C26H28ClNO and a molecular weight of 405.96 g/mol.
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, cis-Clomiphene 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. 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 analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C26H28ClNO |
| Molecular Weight | 405.96 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| 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.) | 1961 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related cis Standards
- trans-Clomiphene (CAS 15690-57-0)
- Clomiphene N-Oxide (Cis- and Trans- mixture) (CAS 97642-74-5)
- Clomiphene Impurity 1 (CAS 73404-00-9)
- Clomiphene-d5 N-Oxide (CAS 1346606-55-0)
- Clomiphene Impurity 9 (CAS 14770-94-6)
- Clomiphene-d5 Citrate (CAS 1217200-17-3)
- cis-Clomiphene Citrate (CAS 7619-53-6)
- Clomiphene Impurity 2 HCl (CAS 52047-56-0)
Recommended Standards
- Clomifene (CAS 911-45-5)
- Toremifene impurity 8 (CAS 89778-29-0)
- [4,4'-Bipyridine]-2,2',6,6'-tetracarbonyl tetrachloride (CAS 124558-61-8)
- Clopidogrel Impurity 126 (CAS CATO-C4X-1029126)
- 6-(Pyridin-2-ylmethoxy)nicotinic acid (CAS 1072855-62-9)
- (2-Bromo-6-(pyrimidin-2-yl)pyridin-4-yl)boronic acid (CAS 2225181-33-7)
- Piperazin-1-yl(piperidin-4-yl)methanone dihydrochloride (CAS 1197831-75-6)
- 3-Cyclopropyl-3-(3,4-dimethoxyphenyl)-N-methylpropan-1-amine hydrochloride (CAS 1225333-15-2)
- (S)-2-Amino-N-(4-chlorobenzyl)-N-isopropyl-3-methylbutanamide (CAS 1354001-23-2)
- 3,5-Dichloro-N-(3-(trifluoromethyl)phenyl)benzamide (CAS 56661-34-8)
- 6,8-dimethylisoquinoline (CAS 67878-83-5)
- N-(2-Benzoyl-4-bromophenyl)acetamide (CAS 71787-43-4)
- 5-Bromo-2-(dimethoxymethyl)-1-(phenylsulfonyl)-1H-pyrrolo[2,3-b]pyridine (CAS 1261365-83-6)
- Semaglutide impurity 31 (CAS CATO-C4X-222631)
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