Fluoxetine EP Impurity A Oxalate CAS 918658-76-1
| CAS No. | 918658-76-1 |
| Molecular Formula | C10H15NO |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Fluoxetine EP Impurity A Oxalate (C10H15NOC2H2O4) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
Fluoxetine EP Impurity A Oxalate (CAS 918658-76-1) is a certified pharmaceutical impurity reference standard with the molecular formula C10H15NOC2H2O4 and a molecular weight of 255.27 g/mol.
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.
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 | C10H15NO C2H2O4 |
| Molecular Weight | 255.27 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 methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 1 |
Related Fluoxetine Standards
- Fluoxetine Impurity 37 (CAS 101-98-4)
- Fluoxetine Impurity 44 (CAS 101-98-4（free base）)
- Fluoxetine Impurity 19 (CAS 1026723-45-4)
- Fluoxetine Impurity 26 (CAS 103756-12-3)
- (S)-Fluoxetine Hydrochloride (CAS 114247-06-2)
- (R)-Fluoxetine Hydrochloride (CAS 114247-09-5)
- Fluoxetine oxalate, >98% (CAS 114414-02-7)
- Fluoxetine-d5 HCl (CAS 1173020-43-3)
Recommended Standards
- Semaglutide impound 212 (CAS CATO-C4X-2226212)
- Gefitinib Impurity 6 (CAS 788136-89-0)
- Eltrombopag impurity 141 (CAS CATO-C4X-1198141)
- 2-Bromo-1-(4-methylthiazol-2-yl)ethanone hydrochloride (CAS 1337880-53-1)
- 5-((Benzyloxy)methoxy)-1-(3-bromophenyl)-2-(hydroxymethyl)pyridin-4(1H)-one (CAS 1632286-22-6)
- L-Aspartic acid, homopolymer, potassium salt (CAS 64723-18-8)
- Allyl p-tolylcarbamate (CAS 86065-10-3)
- 2-(5-(2,4-Dichlorophenyl)-1H-pyrazol-1-yl)pyrimidine-5-carbonitrile (CAS 321385-87-9)
- n-Hydroxycyclopropanecarboximidamide hydrochloride (CAS 22926-85-8)
- [y-Glu3]-Semaglutide Impurity 135 (CAS CATO-C4X-2226135)
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