2-(3,4-Dihydroxyphenyl)-5,6,7-trihydroxy-4H-chromen-4-one CAS 18003-33-3
| CAS No. | 18003-33-3 |
| Molecular Formula | C15H10O7 |
| Molecular Weight | 302.24 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
2-(3,4-Dihydroxyphenyl)-5,6,7-trihydroxy-4H-chromen-4-one (CAS 18003-33-3), molecular formula C15H10O7 and molecular weight 302.24 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a flavonoid core, a hydroxyl group, an ether linkage, 2-(3,4-Dihydroxyphenyl)-5,6,7-trihydroxy-4H-chromen-4-one is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 302.24 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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), 2-(3,4-Dihydroxyphenyl)-5,6,7-trihydroxy-4H-chromen-4-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 | C15H10O7 |
| Molecular Weight | 302.24 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
Related Dihydroxyphenyl Standards
- 2-(3,4-Dihydroxyphenyl)-7-fluoro-3-hydroxy-1-methylquinolin-4(1H)-one (CAS 1313739-02-4)
- 3-(2,4-Dihydroxyphenyl)-7-hydroxy-5-methoxy-2H-chromen-2-one (CAS 1092952-62-9)
- 2-(3,4-Dihydroxyphenyl)-7-hydroxy-5-methoxy-4H-chromen-4-one (CAS 58115-29-0)
- 2-(3,4-Dihydroxyphenyl)-3,5,7-trihydroxychroman-4-one (CAS 215257-15-1)
- 2-(3,4-Dihydroxyphenyl)-6-ethyl-3-hydroxychromen-4-one (CAS 1313738-76-9)
- (E)-2-((3-(3,4-Dihydroxyphenyl)acryloyl)oxy)succinic acid (CAS 92344-57-5)
- 1-(2,4-Dihydroxyphenyl)-2-(4-phenyl-4H-1,2,4-triazol-3-yl)ethanone (CAS 66819-07-6)
- 1-(2,4-Dihydroxyphenyl)-2-(1-phenyl-1H-pyrazol-4-yl)ethanone (CAS 51412-24-9)
Recommended Standards
- Olsalazine-d3,15N sodium (CAS 15722-48-2)
- 3-(3-Carboxyphenoxy)phthalic acid (CAS 1826827-36-4)
- (2R,3R,5R)-5-(2,6-Diamino-9H-purin-9-yl)-4,4-difluoro-2-(hydroxymethyl)tetrahydrofuran-3-ol (CAS 156130-57-3)
- N-(3,4-difluorophenyl)-6-nitroquinazolin-4-amine (CAS 184360-64-3)
- Methyl 6-hydroxy-2,3-dihydro-1H-indene-1-carboxylate (CAS 216582-48-8)
- methyl 1-benzyl-1H-pyrazole-3-carboxylate (CAS 7188-98-9)
- 4-Methoxy-2-(methoxymethyl)phenylboronic acid (CAS 1451392-22-5)
- 1-Chloro-2-(2-iodoethoxy)ethane (CAS 42070-18-8)
- 2-Ethylbenzoxazole-6-carboxylic Acid (CAS 501918-66-7)
- N-[(benzylamino)carbonyl]acrylamide (CAS 1000931-67-8)
- Propranolol EP Impurity A (CAS 36112-95-5)
- (E)-(3-Chlorostyryl)boronic acid (CAS 1258237-13-6)
- Methyl N-[(4-chlorophenyl)sulfonyl]-N-(3-methylphenyl)glycinate (CAS 896897-85-1)
- Semaglutide impurity 92 (CAS CATO-C4X-222692)
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