Finasteride Impurity 45 CAS CATO-C4X-164545
| CAS No. | CATO-C4X-164545 |
| Molecular Formula | C39H56N2O7 |
| Molecular Weight | 664.87 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Finasteride Impurity 45 (C39H56N2O7) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 13.0, corresponding to approximately 13 ring(s) or double-bond equivalent(s). With a molecular weight of 664.87 g/mol, it falls into the high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO supplies Finasteride Impurity 45 (CAS CATO-C4X-164545), a pharmacopoeial impurity reference standard (molecular formula C39H56N2O7, MW 664.87 g/mol) used for the identification and quantification of trace impurities in APIs.
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), Finasteride Impurity 45 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 | C39H56N2O7 |
| Molecular Weight | 664.87 g/mol |
| 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 |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 2 |
Related Finasteride Standards
- Finasteride Impurity N44 (CAS 140700-61-4)
- Finasteride Impurity 48 (CAS CATO-C4X-164548)
- Finasteride Impurity 49 (CAS CATO-C4X-164549)
- Finasteride Impurity 50 (CAS CATO-C4X-164550)
- Finasteride Impurity 52 (CAS CATO-C4X-164552)
- Finasteride Impurity 62 (CAS CATO-C4X-164562)
- Finasteride Impurity 42 (CAS 116285-38-2)
- Finasteride Impurity 16 (CAS 116285-41-7)
Recommended Standards
- 4-[[11-[(1-Oxo-2-propen-1-yl)oxy]undecyl]oxy]benzoic acid 4-[[[trans-4-(hexyloxy)cyclohexyl]carbonyl]oxy]phenyl ester (CAS 852056-56-5)
- N-[(1S,2R)-2-[[(1,1-Dimethylethyl)diphenylsilyl]oxy]-1-[(diphenylphosphino)methyl]propyl]-N'-(4-fluorophenyl)thiourea (CAS 1333260-41-5)
- 2-3-4-Tri-O-benzoyl-α-D-glucuronide methyl ester trichloroacetimidate (CAS 169557-99-7)
- Paliperidone Impurity 38 (CAS CATO-C4X-1724138)
- Ketoconazole EP Impurity C (and enantiomer) (CAS 83374-59-8)
- Darolutamide Impurity 25 (CAS CATO-C4X-310625)
- Macitentan Impurity 8 (CAS 556796-88-4)
- Pinaverium impurity 34 (CAS 1970218-63-3)
- 6926-58-5 CTK2F8781 Hydrazinecarbothioamide, N,N-dimethyl- (CAS 6926-58-5)
- 2-Amino-2-(pyridin-2-yl)acetic acid (CAS 62451-88-1)
- 3-(3-Fluorophenyl)-2-thioxo-2,3-dihydroquinazolin-4(1H)-one (CAS 65141-59-5)
- (E)-Hexahydro-(Z)-4,7a-dimethyl-4-vinylbenzofuran-2(3H)-one (CAS 87248-73-5)
- tert-butyl (6-(cyanomethyl)benzo[d]thiazol-2-yl)carbamate (CAS 1440526-50-0)
- Antistasin-Related Peptide (CAS 161561-46-2)
Why CATO?
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