Cholic Acid Impurity 66 CAS 5676-40-4
| CAS No. | 5676-40-4 |
| Molecular Formula | C28H42O7 |
| Molecular Weight | 490.63 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.
Cholic Acid Impurity 66 (CAS 5676-40-4) is a certified pharmaceutical impurity reference standard with the molecular formula C28H42O7 and a molecular weight of 490.63 g/mol.
Structurally, Cholic Acid Impurity 66 (C28H42O7) contains a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 490.63 g/mol, it falls into the moderately-high-molecular-weight range. 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 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 | C28H42O7 |
| Molecular Weight | 490.63 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
Related Cholic Standards
- Cholic Acid Impurity 54 (CAS 70779-05-4)
- Cholic Acid Impurity 31 (CAS CATO-C4X-116031)
- Cholic Acid Impurity 63 (CAS CATO-C4X-116063)
- Cholic Acid Impurity 70 (CAS 58822-33-6)
- Cholic Acid Impurity 84 (CAS CATO-C4X-116084)
- Cholic Acid Impurity 73 (CAS CATO-C4X-116073)
- Cholic Acid Impurity 74 (CAS CATO-C4X-116074)
- Cholic Acid Impurity 68 (CAS 7753-73-3)
Recommended Standards
- Cyclohexyl 3-(1,3-dioxolan-2-yl)phenyl ketone (CAS 898759-78-9)
- 7-(Benzyloxy)-6-methoxy-2-(4-methyl-1,4-diazepan-1-yl)-N-(1-methylpiperidin-4-yl)quinazolin-4-amine (CAS 1197196-47-6)
- Caudatin (CAS 38395-02-7)
- Sapacitabine (CAS 151823-14-2)
- Coumarin Impurity 8 (CAS 52840-38-7)
- Ramosetron Impurity 25 (CAS CATO-C4X-118225)
- Cefpodoxime Proxetil Impurity 22 (CAS CATO-C4X-157922)
- 4-(Benzyloxy)-2-fluorobenzoic acid (CAS 114045-96-4)
- 3-(N-Methyl4-fluorobenzenesulfonamido)-thiophene-2-carboxylic acid (CAS 1291486-61-7)
- 1-(2-(6-Morpholinopyridin-3-yl)pyrrolidin-1-yl)ethanone (CAS 1352506-69-4)
- (R)-6-Bromo-4-methyl-4,5-dihydro-1H-benzo[b][1,4]diazepin-2(3H)-one (CAS 1884712-55-3)
- Urapidil Impurity 23 (CAS CATO-C4X-192423)
- Methyl 2-(3-(3-fluoro-4-methylbenzoyl)-4-hydroxy-5-oxo-2-(p-tolyl)-2,5-dihydro-1H-pyrrol-1-yl)-4-methylthiazole-5-carboxylate (CAS 618072-59-6)
- Atrial Natriuretic Peptide (ANP)(1-28) Alpha (Human, Ovine, Canine) (CAS 91917-63-4)
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