6-(2,5-Dihydroxyphenyl)-6H-dibenzo-[c,e][1,2]oxaphosphinine 6-oxide CAS 99208-50-1
| CAS No. | 99208-50-1 |
| Molecular Formula | C18H13O4P |
| Molecular Weight | 324.27 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 6-(2,5-Dihydroxyphenyl)-6H-dibenzo-[c,e][1,2]oxaphosphinine 6-oxide (CAS 99208-50-1), a certified reference material (molecular formula C18H13O4P, MW 324.27 g/mol) for analytical method development and quality control.
Owing to a flavonoid core, a phosphate ester group, a hydroxyl group, an ether linkage, 6-(2,5-Dihydroxyphenyl)-6H-dibenzo-[c,e][1,2]oxaphosphinine 6-oxide is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 324.27 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 6-(2,5-Dihydroxyphenyl)-6H-dibenzo-[c,e][1,2]oxaphosphinine 6-oxide 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 | C18H13O4P |
| Molecular Weight | 324.27 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 chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 12.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
Related Dihydroxyphenyl Standards
- Methyl 4-{[3-(2,4-dihydroxyphenyl)-1h-pyrazol-4-yl]oxy}benzoate (CAS 510766-37-7)
- 1-(2,6-Dihydroxyphenyl)-9-phenylnonan-1-one (CAS 63335-23-9)
- 2-(3,4-Dihydroxyphenyl)-7-hydroxy-3,5-dimethoxy-4H-chromen-4-one (CAS 1486-66-4)
- 1,7-bis(3,4-dihydroxyphenyl)heptan-3-one 886226-15-9 (CAS 886226-15-9)
- 1-(2,4-Dihydroxyphenyl)-3-(2,4-dimethoxy-3-methylphenyl)propan-1-one (CAS 1400999-35-0)
- Ethyl 4-(2-(2,4-dihydroxyphenyl)-2-oxoethoxy)benzoate (CAS 637750-84-6)
- 3-(2,4-Dihydroxyphenyl)-7-hydroxy-4-(2-hydroxyethyl)-2H-chromen-2-one (CAS 553681-51-9)
- 2-(3,4-Dihydroxyphenyl)-3-hydroxy-6-propyl-4H-chromen-4-one (CAS 1313738-79-2)
Recommended Standards
- 2,5-Dioxopyrrolidin-1-yl 4-(azidosulfonyl)benzoate (CAS 1427502-22-4)
- Landiolol Impurity 56 (CAS CATO-C4X-262156)
- Diphenyl ((1s,2r)-1,2,3-trihydroxypropyl)phosphonate (CAS 1176448-22-8)
- n-((4-Bromothiophen-2-yl)methyl)-4-phenylbutan-2-amine (CAS 1040047-38-8)
- 4-Bromo-N-(2-(dimethylamino)propyl)-1h-pyrrole-2-carboxamide (CAS 1184568-09-9)
- cis-1-Cbz-4-amino-3-fluoropiperidine (CAS 1268520-82-6)
- S-(4-Chlorophenyl) O,O-dimethyl phosphorothioate (CAS 3309-87-3)
- 5-Phenylpyridine-2-carbonitrile (CAS 39065-45-7)
- Polymyxin E2 /Colistin B Acetate (CAS 7239-48-7 (free base))
- 5-(3,4-Dimethylphenyl)-3-hydrazinyl-1,2,4-triazine (CAS 915924-87-7)
- 5-Ethylfuran-2-carbohydrazide (CAS 21156-93-4)
- N-(3-Fluoro-4-methylphenyl)-5-methyl-11-oxo-5H,5aH,6H,7H,8H,9H,11H-pyrido[2,1-b]quinazoline-3-carboxamide (CAS 1574566-38-3)
- (4-Fluoro-benzyl)-(tetrahydro-furan-2-ylmethyl)-amine hydrobromide (CAS 1135232-64-2)
- D-Pro31-Tirzepatide (CAS CATO-CPTD788905)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
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