Terazosin EP Impurity F HCl CAS 109678-71-9(Free Base)
| CAS No. | 109678-71-9(Free Base) |
| Molecular Formula | C19H27N5O4 |
| 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 425.91 g/mol gives Terazosin EP Impurity F HCl distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Terazosin EP Impurity F HCl (CAS 109678-71-9(Free Base)) is a certified pharmaceutical impurity reference standard with the molecular formula C19H27N5O4HCl and a molecular weight of 425.91 g/mol.
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, Terazosin EP Impurity F HCl is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 425.91 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
As a certified reference material (CRM), Terazosin EP Impurity F 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 | C19H27N5O4 HCl |
| Molecular Weight | 425.91 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 5 |
Related Terazosin Standards
- Terazosin-d8 (CAS 1006718-20-2)
- Terazosin EP Impurity D (CAS 102714-74-9)
- Terazosin EP Impurity E (CAS 102839-00-9)
- Terazosin EP Impurity G (CAS 105356-89-6)
- Terazosin EP Impurity H (CAS 105356-90-9)
- Terazosin EP Impurity H HCl (CAS 105356-90-9 (free base))
- (R)-Terazosin (CAS 109351-34-0)
- Terazosin EP Impurity F (CAS 109678-71-9)
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- Liraglutide Impurity 31 (CAS CATO-C4X-199231)
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