(2R,3S,4R,5R)-2-(Acetoxymethyl)-6-bromo-5-(1,3-dioxoisoindolin-2-yl)tetrahydro-2H-pyran-3,4-diyl diacetate CAS 70831-94-6
| CAS No. | 70831-94-6 |
| Molecular Formula | C20H20BrNO9 |
| Molecular Weight | 498.28 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 (2R,3S,4R,5R)-2-(Acetoxymethyl)-6-bromo-5-(1,3-dioxoisoindolin-2-yl)tetrahydro-2H-pyran-3,4-diyl diacetate (CAS 70831-94-6), a certified reference material (molecular formula C20H20BrNO9, MW 498.28 g/mol) for analytical method development and quality control.
Structurally, (2R,3S,4R,5R)-2-(Acetoxymethyl)-6-bromo-5-(1,3-dioxoisoindolin-2-yl)tetrahydro-2H-pyran-3,4-diyl diacetate (C20H20BrNO9) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 498.28 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), (2R,3S,4R,5R)-2-(Acetoxymethyl)-6-bromo-5-(1,3-dioxoisoindolin-2-yl)tetrahydro-2H-pyran-3,4-diyl diacetate 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 | C20H20BrNO9 |
| Molecular Weight | 498.28 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1977 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
Recommended Standards
- (2R,3R,4S,5R)-2-(6-((4-Amino-3-iodobenzyl)amino)-9H-purin-9-yl)-5-(hydroxymethyl)tetrahydrofuran-3,4-diol (CAS 98866-49-0)
- 6-Chloro-1-(2-((3-chloro-5-(trifluoromethyl)pyridin-2-yl)amino)ethyl)-3-((furan-2-ylmethyl)amino)quinoxalin-2(1H)-one (CAS 303986-19-8)
- 2,2'-(Ethane-1,2-diylbis(sulfanediyl))bis(N-(3,4-dichlorophenyl)acetamide) (CAS 303091-45-4)
- 2-(2,6-dioxo-3-piperidyl)-4-(7-iodoheptoxy)isoindoline-1,3-dione (CAS 2697100-43-7)
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- Clopidogrel Ethyl Ester Sulfate (CAS 1332612-57-3)
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