Quercetin 3-O-β-D-xylopyranoside CAS 549-32-6
| CAS No. | 549-32-6 |
| Molecular Formula | C20H18O11 |
| Molecular Weight | 434.35 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Quercetin 3-O-β-D-xylopyranoside (CAS 549-32-6), a certified reference material (molecular formula C20H18O11, MW 434.35 g/mol) for analytical method development and quality control.
Structurally, Quercetin 3-O-β-D-xylopyranoside (C20H18O11) contains a flavonoid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 12.0, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 434.35 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).
As a certified reference material (CRM), Quercetin 3-O-β-D-xylopyranoside 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 | C20H18O11 |
| Molecular Weight | 434.35 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
Related Quercetin Standards
- 5041-68-9 Quercetin 3-arabinofuranoside (CAS 5041-68-9)
- Quercetin-3 -O-α-L-arabinoside (CAS 22255-13-6)
- Quercetin-3'-glucoside (CAS 19254-30-9)
- Quercetin-7-O-β-D-glucopyranoside (CAS 491-50-9)
- Quercetin-7-O-glucuronide (CAS 38934-20-2)
- Quercetin-3 '- O-glucuronide (CAS 328006-77-5)
- Quercetin-4 '- O-glucuronide (CAS 201463-36-7)
- Quercetin 3-O-β-D-glucuronide (CAS 22688-79-5)
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