3',6'-Dihydroxy-4',5'-diiodo-2',7'-dimethyl-3H-spiro[isobenzofuran-1,9'-xanthen]-3-one CAS 28213-82-3
| CAS No. | 28213-82-3 |
| Molecular Formula | C22H14I2O5 |
| Molecular Weight | 612.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 3',6'-Dihydroxy-4',5'-diiodo-2',7'-dimethyl-3H-spiro[isobenzofuran-1,9'-xanthen]-3-one (CAS 28213-82-3), a certified reference material (molecular formula C22H14I2O5, MW 612.15 g/mol) for analytical method development and quality control.
Owing to a flavonoid core, a hydroxyl group, an ether linkage, iodine substitution, 3',6'-Dihydroxy-4',5'-diiodo-2',7'-dimethyl-3H-spiro[isobenzofuran-1,9'-xanthen]-3-one is typically pale yellow to yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 612.15 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
As a certified reference material (CRM), 3',6'-Dihydroxy-4',5'-diiodo-2',7'-dimethyl-3H-spiro[isobenzofuran-1,9'-xanthen]-3-one 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 | C22H14I2O5 |
| Molecular Weight | 612.15 g/mol |
| 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) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1965 |
| Halogen Content | I-containing |
Related Dihydroxy Standards
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- 3-((Cyclopropylmethyl)(methyl)amino)-5,6-dimethylpyridazine-4-carbonitrile (CAS 1249158-97-1)
- 1-(Furan-2-yl)-2,2-dimethylpropane-1,3-diol (CAS 4946-64-9)
- (2R,3R)-3-(Methoxymethyl)-2-methylmorpholine hydrochloride (CAS 2791475-77-7)
- 6-(Benzo[d][1,3]dioxol-5-yl)-2-oxo-1,2,3,6-tetrahydropyrimidine-4-carboxylic acid (CAS 860610-20-4)
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