(S)-Citalopram-d4 Oxalate CAS CATO-C4X-110977
| CAS No. | CATO-C4X-110977 |
| Molecular Formula | - |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 418.46 g/mol gives (S)-Citalopram-d4 Oxalate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
(S)-Citalopram-d4 Oxalate (CAS CATO-C4X-110977), molecular formula C20H17D4FN2OC2H2O4 and molecular weight 418.46 g/mol, is a CATO reference standard with documented purity and traceability.
(S)-Citalopram-d4 Oxalate (C20H17D4FN2OC2H2O4) contains deuterium isotope labeling, a flavonoid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C20H17D4FN2O C2H2O4 |
| Molecular Weight | 418.46 g/mol |
| Appearance | Pale yellow to 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
| Nitrogen Atoms | 2 |
Related S Standards
- Citalopram Impurity 38 (CAS 103146-26-5)
- Citalopram Impurity 17 (CAS 1187671-15-3)
- Citalopram EP Impurity D HBr (CAS 1188264-72-3)
- Citalopram-d6 N-Oxide (CAS 1189652-54-7)
- Citalopram-d6 (CAS 1190003-26-9)
- (R)-Citalopram-d6 N-Oxide (CAS 1217669-62-9)
- (S)-Citalopram-d6 N-Oxide (CAS 1217710-65-0)
- (S)-Citalopram-d6 Oxalate (CAS 1217733-09-9)
Recommended Standards
- 2-Chloro-N-(cyclohex-1-en-1-yl)-N-(furan-2-ylmethyl)acetamide (CAS 69763-25-3)
- 6,8-Dibromo-5-methylimidazo-[1,2-a]pyridine-2-carbohydrazide (CAS 1427460-65-8)
- Atractylodinol (CAS 61642-89-5)
- 4-Propionylbenzyl acetate (CAS 352233-13-7)
- 2-Methyl-3-(pyrrolidin-1-yl)propan-1-amine (CAS 893644-54-7)
- 1-ethyl-3,3-dimethylpiperazin-2-one hydrochloride (CAS 1803582-92-4)
- 2-Methoxy-N-(tetrahydro-2H-thiopyran-4-yl)pyridin-3-amine (CAS 1157632-89-7)
- N1,N4-bis(2-hydroxyethyl)terephthalamide (CAS 18928-62-6)
- 1-Chloro-2,2-dimethyl-5-(methylsulfonyl)pentane (CAS 1480716-08-2)
- Peptide 438 (CAS CATO-CPTD788438)
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