Fluoxetine Impurity 40 CAS 175359-21-4
| CAS No. | 175359-21-4 |
| Molecular Formula | C7H4F2O |
| Molecular Weight | 142.10 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.
CATO supplies Fluoxetine Impurity 40 (CAS 175359-21-4), a pharmacopoeial impurity reference standard (molecular formula C7H4F2O, MW 142.10 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system, Fluoxetine Impurity 40 is typically off-white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 142.10 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).
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 | C7H4F2O |
| Molecular Weight | 142.10 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2007 |
| Halogen Content | F-containing |
Related Fluoxetine Standards
- Fluoxetine Impurity 03 (CAS 83554-67-0)
- Fluoxetine EP Impurity B (CAS 23580-89-4)
- Fluoxetine Impurity 23 (CAS 5053-63-4)
- Fluoxetine Impurity 01 (CAS 4850-49-1)
- Fluoxetine Impurity 30 (CAS 13323-81-4)
- Fluoxetine Impurity 4 (CAS 402-45-9)
- Fluoxetine Impurity 25 (CAS 27152-62-1)
- Fluoxetine EP Impurity A (CAS 42142-52-9)
Recommended Standards
- Ticagrelor Impurity 106 (CAS 34036-07-2)
- Methyl 2-amino-1,3-oxazole-4-carboxylate (CAS 1000576-38-4)
- 2,3-Difluorobenzaldehyde (CAS 2646-91-5)
- 1-(Hydroxymethyl)-1h-pyrazole-3-carboxylic acid (CAS 100219-61-2)
- Oxfendazole Impurity 1 (CAS 2197014-92-7)
- Amorolfine Impurity 40 (CAS CATO-C4X-154240)
- Roxadustat Impurity 106 (CAS CATO-C4X-2213106)
- Ethyl 2-(1H-indazol-3-yl)-2-oxoacetate (CAS 919766-35-1)
- N-((S)-1-((S)-2-Amino-3-methylbutanoyl)pyrrolidin-3-yl)-N-isopropylacetamide (CAS 1401665-79-9)
- (2R)-2-aminohex-4-ynoic acid (CAS 346707-82-2)
- Atorvastatin Acid Sodium salt (CAS 134523-01-6)
- 6-(P-tolylthio)hexan-2-one (CAS 1157732-18-7)
- 4,4-Bis(Hydroxymethyl)cyclohexan-1-one (CAS 340022-80-2)
- [D-His]-Semaglutide B (x TFA Salt) (CAS CATO-C4X-2226117)
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