Ursodeoxycholic Acid Impurity 66 CAS CATO-C4X-142266
| CAS No. | CATO-C4X-142266 |
| Molecular Formula | C24H38O7S |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 493.61 g/mol gives Ursodeoxycholic Acid Impurity 66 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies Ursodeoxycholic Acid Impurity 66 (CAS CATO-C4X-142266), a pharmacopoeial impurity reference standard (molecular formula C24H38O7SNa, MW 493.61 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C24H38O7SNa, Ursodeoxycholic Acid Impurity 66 contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 493.61 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C24H38O7S 2*Na |
| Molecular Weight | 493.61 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, 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 |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Sulfur Atoms | 1 |
Related Ursodeoxycholic Standards
- Ursodeoxycholic Acid Impurity 119 (CAS 1024498-33-6)
- Ursodeoxycholic Acid EP Impurity G (CAS 10538-55-3)
- Ursodeoxycholic Acid Impurity 123 (CAS 10601-78-2)
- Ursodeoxycholic acid impurity 61 (CAS 110107-03-4)
- Ursodeoxycholic Acid impurity 108 (CAS 1144012-08-7)
- 24-Nor Ursodeoxycholic Acid Methyl Ester (CAS 118316-16-8)
- Ursodeoxycholic Impurity 18 (CAS 1192657-83-2)
- Ursodeoxycholic Acid EP Impurity I (CAS 130593-75-8)
Recommended Standards
- Tadalafil EP Impurity A (CAS 171596-27-3)
- Mianserin Impurity 123 (CAS CATO-C4X-1369123)
- Fosfomycin Impurity 72 (CAS 26017-01-6)
- Bendamustine Impurity 38 (CAS CATO-C4X-127138)
- 2-Chloro-N-(1,3-thiazol-2-yl)pyridine-3-carboxamide (CAS 85678-90-6)
- 2-tert-Butyl 8-methyl 2,6-diazaspiro[3.4]octane-2,8-dicarboxylate (CAS 2028341-88-8)
- 6-Aminoquinazolin-4(3H)-one (CAS 17329-31-6)
- 3-(4-Bromo-1H-pyrazol-3-yl)pyridine (CAS 148138-02-7)
- 5-Bromo-2-methyl-1H-pyrrolo[2,3-b]pyridine (CAS 1111638-02-8)
- Endo-38a-Pro-Exenatide trifluoroacetate salt (CAS 1678416-95-9)
Why CATO?
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