Ursodeoxycholic Acid-24-13C CAS 63296-46-8
| CAS No. | 63296-46-8 |
| Molecular Formula | C23[13C]H40O4 |
| Molecular Weight | 393.56 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Ursodeoxycholic Acid-24-13C (C23[13C]H40O4) contains a steroid core, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Ursodeoxycholic Acid-24-13C (CAS 63296-46-8), molecular formula C23[13C]H40O4 and molecular weight 393.56 g/mol, is a CATO reference standard with documented purity and traceability.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
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 | C23[13C]H40O4 |
| Molecular Weight | 393.56 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| 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.) | 1975 |
Related Ursodeoxycholic Standards
- 24-Nor Ursodeoxycholic Acid Methyl Ester (CAS 118316-16-8)
- Ursodeoxycholic Acid impurity 102 (CAS CATO-C4X-1422102)
- Ursodeoxycholic Acid Impurity 110 (CAS CATO-C4X-1422110)
- Ursodeoxycholic Acid Impurity 114 (CAS 51446-79-8)
- Ursodeoxycholic Acid Impurity 22 (CAS 566-24-5)
- Ursodeoxycholic acid Impurity 23 (CAS CATO-C4X-142223)
- Ursodeoxycholic Acid EP Impurity A (CAS 474-25-9)
- Ursodeoxycholic acid impurity 31 (CAS 566-17-6)
Recommended Standards
- Undecylprodigiosin (CAS 52340-48-4)
- Abiraterone Impurity 78 (CAS 98449-11-7)
- Deoxycholic Acid-24-13C (CAS 52886-37-0)
- Palbociclib Impurity 64 (CAS CATO-C4X-112564)
- 4-(1-Ethyl-1H-1,2,3-triazol-4-yl)aniline (CAS 89221-08-9)
- 4-(6-m-Tolylpyridin-3-yl)-pyrimidin-2-ylamine (CAS 2088942-44-1)
- 1-(4-Methyl-3,4-dihydroquinolin-1(2H)-yl)ethanone (CAS 135579-07-6)
- 8-Chloro-6-fluoro-2H-chromene-3-sulfonyl chloride (CAS 1235440-07-9)
- 3-methyl-2,3,4,5-tetrahydro-1H-1,4-benzodiazepin-5-one (CAS 27545-05-7)
- 5-Nitroguaiacol Sodium Salt (CAS 67233-85-6)
- Oseltamivir impurity N1 (CAS 1268086-96-9)
- Racecadotril Impurity 2 (CAS 1892-31-5)
- tert-Butyl 2-(cyclopropanecarbonyl)hydrazinecarboxylate (CAS 851295-78-8)
- Semaglutide impurity 86 (CAS CATO-C4X-152686)
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