Clomifene EP Impurity C HCl CAS 5635-70-1
| CAS No. | 5635-70-1 |
| Molecular Formula | C26H29NO2 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 423.98 g/mol gives Clomifene EP Impurity C HCl distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Clomifene EP Impurity C HCl (CAS 5635-70-1) is a certified pharmaceutical impurity reference standard with the molecular formula C26H29NO2HCl and a molecular weight of 423.98 g/mol.
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, Clomifene EP Impurity C HCl is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 423.98 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
As a certified reference material (CRM), Clomifene EP Impurity C HCl 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.
Physical & Chemical Properties
| Molecular Formula | C26H29NO2 HCl |
| Molecular Weight | 423.98 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Clomifene Standards
- Clomifene Impurity 9 (CAS 113454-71-0)
- Clomifene Citrate EP Impurity D (CAS 1391054-64-0)
- Clomifene Citrate - Impurity F (Citrate Salt) (CAS 14158-75-9)
- Clomifene 2-Chloro Citrate Salt (Mixture of Z and E Isomers) (CAS 1795130-18-5)
- Clomifene EP Impurity A (CAS 19957-52-9)
- Clomifene Impurity 8 (CAS 23464-17-7)
- Clomifene Impurity 17 (CAS 5530-99-4(free base))
- Clomifene Impurity 7 (CAS 58280-04-9)
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