Finasteride Impurity 55 CAS CATO-C4X-164555
| CAS No. | CATO-C4X-164555 |
| Molecular Formula | C23H36N2O2 |
| Molecular Weight | 372.54 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Finasteride Impurity 55 (CAS CATO-C4X-164555) is a certified pharmaceutical impurity reference standard with the molecular formula C23H36N2O2 and a molecular weight of 372.54 g/mol.
The molecular framework of Finasteride Impurity 55 (C23H36N2O2) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
As a certified reference material (CRM), Finasteride Impurity 55 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 | C23H36N2O2 |
| Molecular Weight | 372.54 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°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 |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 2 |
Related Finasteride Standards
- Finasteride (CAS 98319-26-7)
- Finasteride Impurity 11 (CAS CATO-C4X-164511)
- Finasteride Impurity 15 (CAS 140375-21-9)
- Finasteride Impurity 19 (CAS 166896-74-8)
- 5-Beta-Finasteride (CAS 140375-22-0)
- Finasteride Impurity 13 (CAS CATO-C4X-164513)
- Finasteride Impurity 18 (CAS 131267-80-6)
- Finasteride Impurity 27 (CAS 1329611-51-9)
Recommended Standards
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- Bempedoic Acid Impurity 25 (CAS 2511500-14-2)
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- 2-Butyl-7-phenylbenzo[b]benzo[4,5]thieno[2,3-d]thiophene (CAS 1781261-91-3)
- Rosuvastatin Impurity 237 (CAS CATO-C4X-1169237)
- Picosulfate EP Impurity C (CAS CATO-C4X-12373)
- Betamethasone Impurity 138 (CAS CATO-C4X-1437138)
- 3-Chloro-N-(m-tolyl)propanamide (CAS 19352-22-8)
- 1-[3-(benzyloxy)phenyl]propan-2-one (CAS 62932-75-6)
- 2,3-Dihydrospiro[indene-1,3'-pyrrolidine]-5,6-diol (CAS 100038-04-8)
- Ethyl 4-bromo-3-formyl-1H-indole-7-carboxylate (CAS 1643573-87-8)
- (R)-3,5-difluoro-4-(pyrrolidin-2-yl)aniline (CAS 1213143-66-8)
- N-[2-(Aminocarbonyl)phenyl]-4-(1-azepanyl)-3-nitrobenzenecarboxamide (CAS 1092346-15-0)
- Semaglutide impurity 75 (CAS CATO-C4X-222675)
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