(4-methoxyphenyl)diphenylphosphine oxide CAS 795-44-8
| CAS No. | 795-44-8 |
| Molecular Formula | C19H17O2P |
| Molecular Weight | 308.31 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of (4-methoxyphenyl)diphenylphosphine oxide is closely related to a steroid core, organophosphorus functionality, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
(4-methoxyphenyl)diphenylphosphine oxide (CAS 795-44-8), molecular formula C19H17O2P and molecular weight 308.31 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a steroid core, organophosphorus functionality, a hydroxyl group, an ether linkage, (4-methoxyphenyl)diphenylphosphine oxide is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 308.31 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.
CATO manufactures (4-methoxyphenyl)diphenylphosphine oxide under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C19H17O2P |
| Molecular Weight | 308.31 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| 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) | 11.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
Related methoxyphenyl Standards
- N-(4-Methoxyphenyl)-4-nitrobenzenesulfonamide (CAS 10553-17-0)
- N-(4-methoxyphenyl)-3-nitrobenzenesulfonamide (CAS 180631-81-6)
- (2-Methoxyphenyl)diphenylphosphine oxide (CAS 51986-54-0)
- 5-((4-Methoxyphenyl)sulfonamido)nicotinic acid (CAS 627489-32-1)
- N-(2-Methoxyphenyl)-4-nitrobenzenesulfonamide (CAS 299968-56-2)
- n-(4-Methoxyphenyl)-2-nitrobenzenesulfonamide (CAS 63228-64-8)
- 3-(2-Methoxyphenyl)-1-(3-(trifluoromethyl)phenyl)propan-1-one (CAS 898770-30-4)
- 3-(2-Methoxyphenyl)-1-(4-(trifluoromethyl)phenyl)propan-1-one (CAS 898770-33-7)
Recommended Standards
- (4-(Hydroxymethyl)phenyl)diphenylphosphineoxide (CAS 5068-20-2)
- 1-(4-Methoxy-Benzyl)-3-(5-Nitro-Thiazol-2-Yl)-Urea (CAS 487021-52-3)
- 2-((3-Amino-4-hydroxyphenyl)sulfonamido)benzoic acid (CAS 91-35-0)
- (2e)-3-[3-(4-fluorophenyl)-1-phenyl-1h-pyrazol-4-yl]prop-2-enoic acid (CAS 519137-39-4)
- 2-((4-Aminobutyl)amino)ethanol (CAS 23563-86-2)
- 1-Butyl-1-methylpyrrolidinium Trifluoromethanesulfonate (CAS 367522-96-1)
- 2-(4-(Difluoromethyl)-5,6-dimethoxypyridin-2-yl)acetic acid (CAS 1805162-07-5)
- 1,1'-(6-Methoxypyridine-2,4-diyl)bis(ethan-1-one) (CAS 1393570-04-1)
- Butyric (2S)-3-hydroxy-4-((methylsulfonyl)oxy)pyrrolidine-2-carboxylic anhydride (CAS 828276-71-7)
- n-(4-Bromo-3-methylphenyl)-3-(1h-pyrazol-1-yl)propanamide (CAS 1152588-78-7)
- 5-(2-(Cyclopropylmethyl)pyrimidin-4-yl)-4-methylthiazol-2-amine (CAS 1163707-18-3)
- 3-Fluoro-5-((trimethylsilyl)ethynyl)picolinonitrile (CAS 1246088-63-0)
- 1-(3-Hydroxyphenyl)cyclopentane-1-carbonitrile (CAS 1823046-46-3)
- Acetyl Tetrapeptide-11 (CAS 928006-88-6)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com