Silymarin B CAS 142797-34-0
| CAS No. | 142797-34-0 |
| Molecular Formula | C25H22O10 |
| Molecular Weight | 482.44 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Silymarin B is closely related to a flavonoid core, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Silymarin B (CAS 142797-34-0), molecular formula C25H22O10 and molecular weight 482.44 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, Silymarin B (C25H22O10) contains a flavonoid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 15.0, corresponding to approximately 15 ring(s) or double-bond equivalent(s). With a molecular weight of 482.44 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 analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), Silymarin B meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C25H22O10 |
| Molecular Weight | 482.44 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) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1997 |
Related Silymarin Standards
Recommended Standards
- Silychristin B (CAS 879325-58-3)
- Silydianin (CAS 29782-68-1)
- Silybin (CAS 36804-17-8)
- Isosilybin A (CAS 142796-21-2)
- 2-Sulfanylidene-3-[2-(thiophen-2-yl)ethyl]-1H,2H,3H,4H-thieno[3,2-d]pyrimidin-4-one (CAS 1155931-27-3)
- 2-Amino-N-(3-(aminomethyl)-4h-1,2,4-triazol-4-yl)acetamide trihydrochloride (CAS 1351647-67-0)
- Methyl 2-((2,4-dichlorobenzyl)thio)benzoate (CAS 308851-38-9)
- Oxacillin Impurity 59 (CAS CATO-C4X-232159)
- Alpha/beta-Arteether (CAS 123492-25-1)
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- 3-(tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrrole (CAS 214360-77-7)
- Ethyl 2-bromo-4-fluorobenzo[d]thiazole-6-carboxylate (CAS 2314381-32-1)
- Liraglutide(14-22)TFA Salt (CAS CATO-C4X-199212)
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