Finasteride Impurity N44 CAS 140700-61-4
| CAS No. | 140700-61-4 |
| Molecular Formula | C23H37IN2O2 |
| Molecular Weight | 500.46 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Finasteride Impurity N44 is closely related to a steroid core, an amide group, a hydroxyl group, an ether linkage, iodine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Finasteride Impurity N44 (CAS 140700-61-4) is a certified pharmaceutical impurity reference standard with the molecular formula C23H37IN2O2 and a molecular weight of 500.46 g/mol.
Structurally, Finasteride Impurity N44 (C23H37IN2O2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, iodine substitution. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 500.46 g/mol, it falls into the moderately-high-molecular-weight range. 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).
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.
CATO manufactures Finasteride Impurity N44 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C23H37IN2O2 |
| Molecular Weight | 500.46 g/mol |
| Appearance | Off-white to pale 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1997 |
| Halogen Content | I-containing |
| Nitrogen Atoms | 2 |
Related Finasteride Standards
- 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)
- Finasteride Carboxylic Acid (CAS 116285-37-1)
Recommended Standards
- QWV6T6M34F 60134-71-6 Nocardicin B 1-Azetidineacetic acid, 3-(((4-(3-amino-3-carboxypropoxy)phenyl)(hydroxyimino)acetyl)amino)-alpha-(4-hydroxyphenyl)-2-oxo-, (3S-(1(S*),3R*(E(S*))))- Antibiotic FR 2458 BRN 3599648 FR-2458 UNII-QWV6T6M34F (CAS 60134-71-6)
- Cefixime Impurity 112 (CAS CATO-C4X-1139112)
- 39391-39-4 R76HLW7Z19 Nocardicin A 1-Azetidineacetic acid, 3-(((4-(3-amino-3-carboxypropoxy)phenyl)(hydroxyimino)acetyl)amino)-alpha-(4-hydroxyphenyl)-2-oxo-, (3S-(1(S*),3R*(Z(S*))))- Antibiotic FR 1923 FR-1923-C UNII-R76HLW7Z19 (CAS 39391-39-4)
- Cefixime Impurity 75 (CAS CATO-C4X-113975)
- Acebutolol EP Impurity J (CAS 28197-36-6)
- Varenicline Impurity 66 HCI (CAS 328055-88-5)
- Glutathione Impurity 21 (CAS CATO-C4X-118521)
- 2-(3-Chloro-5-(trifluoromethyl)pyridin-2-yl)-N-(2-(4-(2-(3-chloro-5-(trifluoromethyl)pyridin-2-yl)acetyl)piperazin-1-yl)ethyl)acetamide (CAS 444151-87-5)
- Tert-butyl ((1r,4r)-4-aminocyclohexyl)(oxetan-3-yl)carbamate (CAS 2227197-39-7)
- 3-((4-Nitro-1h-pyrazol-1-yl)methyl)benzoic acid (CAS 514801-16-2)
- 2-Amino-1-(3,4-difluorophenyl)propan-1-one (CAS 799240-65-6)
- 2-(4'-(Methylthio)-[1,1'-biphenyl]-3-yl)acetic acid (CAS 1334500-01-4)
- (R)-1-(3-bromo-4-fluorophenyl)ethan-1-amine (CAS 1212423-60-3)
- Liraglutide Impurity 21 TFA Salt (CAS CATO-C4X-199221)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com