3',6'-Dihydroxy-4-nitro-3H-spiro[isobenzofuran-1,9'-xanthen]-3-one CAS 3318-08-9
| CAS No. | 3318-08-9 |
| Molecular Formula | C20H11NO7 |
| Molecular Weight | 377.30 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
3',6'-Dihydroxy-4-nitro-3H-spiro[isobenzofuran-1,9'-xanthen]-3-one (CAS 3318-08-9) is a high-purity analytical reference standard with the molecular formula C20H11NO7 and a molecular weight of 377.30 g/mol.
3',6'-Dihydroxy-4-nitro-3H-spiro[isobenzofuran-1,9'-xanthen]-3-one (C20H11NO7) contains a flavonoid core, an amide group, 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C20H11NO7 |
| Molecular Weight | 377.30 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, 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) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 1 |
Related Dihydroxy Standards
- 3',6'-Dihydroxy-6-nitro-3H-spiro[isobenzofuran-1,9'-xanthen]-3-one (CAS 27402-68-2)
- N-(15,16-Dihydroxy-4,7,10,13-tetraoxahexadecyl)-2,2,2-trifluoroacetamide (CAS 869308-40-7)
- 1,2-Dihydroxy-3-nitro-4-(phenylamino)anthracene-9,10-dione (CAS 91274-64-5)
- 3,3''-Dihydroxy-2',5'-dimethyl-[1,1':4',1''-terphenyl]-4,4''-dicarboxylic acid (CAS 1382735-24-1)
- 4,4''-Dihydroxy-2',5'-dimethyl-[1,1':4',1''-terphenyl]-3,3''-dicarboxylic acid (CAS 2411327-86-9)
- N-(1,3-dihydroxy-2-(6-octyl-1,2,3,4-tetrahydronaphthalen-2-yl)propan-2-yl)acetamide (CAS 945632-83-7)
- 1’,4-Dihydroxy Triazolam (1.0mg/ml in Acetonitrile) (CAS 65686-12-6)
- 5,7-Dihydroxy-3-(4-hydroxy-3,5-dimethoxybenzyl)-6,8-dimethylchroman-4-one (CAS 212201-12-2)
Recommended Standards
- 2-Bromo-N-{4-[(dipropylamino)sulfonyl]-phenyl}acetamide (CAS 22795-42-2)
- 2-(4-((4-Bromo-2,6-dimethylphenyl)sulfonyl)piperazin-1-yl)ethanol (CAS 1704096-09-2)
- 5(6)-Nitrofluorescein (CAS 78512-32-0)
- 5-Bromo-N,N-diethyl-4-(piperazin-1-yl)pyridine-3-sulfonamide (CAS 1352497-72-3)
- 3-(4-Chlorophenyl)-5-(piperidin-3-yl)-1,2,4-oxadiazole (CAS 958712-85-1)
- Methyl 1-((1h-pyrazol-1-yl)methyl)-1h-pyrazole-3-carboxylate (CAS 1001499-89-3)
- 2-(Cyclopropylamino)pyrimidin-4(3H)-one (CAS 1044771-75-6)
- 3-(Chloromethyl)-6,7-dihydro-5H-pyrrolo[2,1-c][1,2,4]triazole hydrochloride (CAS 1820685-05-9)
- 4-(1-Ethyl-1h-pyrazol-5-yl)butan-2-ol (CAS 1339664-60-6)
- 2-Benzoyl-5-bromobenzaldehyde (CAS 1049009-49-5)
- <I>N</I>-Chlorobenzene sulfonamide sodium salt (CAS 127-52-6)
- 2-(tert-Butyl)-6-methylpyridin-3-ol (CAS 63688-35-7)
- [1,1'-Biphenyl]-4-carbothioamide (CAS 13363-50-3)
- Peptide 435 (CAS CATO-CPTD788435)
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