Ursodeoxycholic acid impurity 27 CAS 77060-26-5
| CAS No. | 77060-26-5 |
| Molecular Formula | C24H38O4 |
| Molecular Weight | 390.56 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Ursodeoxycholic acid impurity 27 (CAS 77060-26-5) is a certified pharmaceutical impurity reference standard with the molecular formula C24H38O4 and a molecular weight of 390.56 g/mol.
Based on its molecular formula C24H38O4, Ursodeoxycholic acid impurity 27 contains a steroid core, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 390.56 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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.
Physical & Chemical Properties
| Molecular Formula | C24H38O4 |
| Molecular Weight | 390.56 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| 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 |
| CAS Registry Year (est.) | 1979 |
Related Ursodeoxycholic Standards
- Ursodeoxycholic Acid Impurity 22 (CAS 67008-26-8)
- Ursodeoxycholic Acid EP Impurity F (CAS 4651-67-6)
- Ursodeoxycholic Acid impurity 103 (CAS CATO-C4X-1422103)
- Ursodeoxycholic Acid impurity 104 (CAS CATO-C4X-1422104)
- Ursodeoxycholic Acid impurity 108 (CAS 1144012-08-7)
- Ursodeoxycholic Acid Impurity 112 (CAS CATO-C4X-1422112)
- Ursodeoxycholic Acid Impurity 116 (CAS 67733-54-4)
- Ursodeoxycholic Acid Impurity 127 (CAS CATO-C4X-1422127)
Recommended Standards
- Ursodeoxycholic acid impurity 27 (CAS 77059-13-3)
- Ursodeoxycholic acid impurity 61 (CAS 110107-03-4)
- Ursodeoxycholic acid impurity 25 (CAS 4185-00-6)
- Ursodeoxycholic acid impurity 62 (CAS CATO-C4X-142262)
- Penehyclidine impurity 32 (CAS CATO-C4X-130432)
- Trospium Impurity N2 (CAS 16444-19-2)
- Loxoprofen Impurity 165 (CAS 63178-03-0)
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