Finasteride Carboxylic Acid CAS 116285-37-1
| CAS No. | 116285-37-1 |
| Molecular Formula | C23H34N2O4 |
| Molecular Weight | 402.53 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 402.53 g/mol gives Finasteride Carboxylic Acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Finasteride Carboxylic Acid (CAS 116285-37-1), molecular formula C23H34N2O4 and molecular weight 402.53 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, Finasteride Carboxylic Acid is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 402.53 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.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
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 | C23H34N2O4 |
| Molecular Weight | 402.53 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 2 |
Related Finasteride Standards
- Finasteride Impurity 53 (CAS CATO-C4X-164553)
- Finasteride Impurity 56 (CAS CATO-C4X-164556)
- Finasteride Impurity 16 (CAS 116285-41-7)
- Finasteride Impurity 59 (CAS CATO-C4X-164559)
- Finasteride Impurity 26 (CAS 133216-45-2)
- Finasteride Impurity 38 (CAS CATO-C4X-164538)
- Finasteride Impurity 12 (CAS CATO-C4X-164512)
- Finasteride Impurity 20 (CAS 190006-01-0)
Recommended Standards
- Fesoterodine Impurity 11 (CAS CATO-C4X-164411)
- Revefenacin Impurity 2 (CAS CATO-C4X-20312)
- Oxazole, 2,2′-[(1R,3S)-1,2,2-trimethyl-1,3-cyclopentanediyl]bis[4,5-dihydro-4-phenyl-, (4S,4′S)- (CAS 906653-74-5)
- Revefenacin Impurity 7 (CAS 2975124-11-7)
- 6-Bromo-2-(4-(diethylamino)phenyl)-1-ethylbenzo[cd]indol-1-ium hydrogensulfate (CAS 85283-89-2)
- (R)-Benzyl 2-((tert-butoxycarbonyl)amino)-4-hydroxybutanoate (CAS 133645-53-1)
- 1-(2,3-Dimethylphenyl)pyrrolidin-3-one (CAS 1096851-38-5)
- Benzyltriethylammonium Borohydride (CAS 85874-45-9)
- 2-(2-Methoxyphenyl)-4,4-dimethyl-4,5-dihydrooxazole (CAS 57598-33-1)
- Timolol Impurity 23 (CAS CATO-C4X-149623)
- (3aR,5R,6R,6aR)-6-Hydroxy-5-(hydroxymethyl)tetrahydrofuro[3,2-b]furan-2(3H)-one (CAS 189556-51-2)
- (3'-(Trifluoromethyl)-[1,1'-biphenyl]-3-yl)methanamine (CAS 472964-39-9)
- (7S)-14-Ethyl-13-methyl-17-thia-3,9,15-triazatetracyclo[8.7.0.0^{3,7}.0^{11,16}]heptadeca-1(10),11(16),12,14-tetraene-2,8-dione (CAS 1212390-99-2)
- Semaglutide impurity 63 (CAS CATO-C4X-222663)
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