Silybin-d5Discontinued See S465857 and S465862. CAS 1329802-47-2
| CAS No. | 1329802-47-2 |
| Molecular Formula | - |
| Molecular Weight | 487.47 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 487.47 g/mol gives Silybin-d5Discontinued See S465857 and S465862. distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Silybin-d5Discontinued See S465857 and S465862. (CAS 1329802-47-2) is a high-purity analytical reference standard with the molecular formula C25H17D5O10 and a molecular weight of 487.47 g/mol.
Silybin-d5Discontinued See S465857 and S465862. (C25H17D5O10) contains deuterium isotope labeling, a flavonoid core, a hydroxyl group, an ether linkage. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C25H17D5O10 |
| Molecular Weight | 487.47 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) | 17.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
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