Bis(3,5-dimethylphenyl)phosphine oxide CAS 187344-92-9
| CAS No. | 187344-92-9 |
| Molecular Formula | C16H19OP |
| Molecular Weight | 258.30 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Bis(3,5-dimethylphenyl)phosphine 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.
Bis(3,5-dimethylphenyl)phosphine oxide (CAS 187344-92-9), molecular formula C16H19OP and molecular weight 258.30 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C16H19OP, Bis(3,5-dimethylphenyl)phosphine oxide contains organophosphorus functionality, a hydroxyl group, an ether linkage, a polycyclic aromatic system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 258.30 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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.
Physical & Chemical Properties
| Molecular Formula | C16H19OP |
| Molecular Weight | 258.30 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2010 |
Related Bis Standards
- 2-(1-(2,3-Dimethylphenyl)-3,5-dimethyl-1H-pyrazol-4-yl)acetic acid (CAS 1267202-87-8)
- 4-(3,4-Dimethylphenyl)-3,4-dihydrofuro[3,4-d]pyrimidine-2,5(1H,7H)-dione (CAS 1708436-99-0)
- 4-(2,4-Dimethylphenyl)-3,4-dihydrofuro[3,4-d]pyrimidine-2,5(1H,7H)-dione (CAS 1713714-04-5)
- 2-(3-(2,4-Dimethylphenyl)-6-oxopyridazin-1(6H)-yl)acetic acid (CAS 853334-27-7)
- 2-(1-(3,5-Dimethylphenyl)vinyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 2212005-39-3)
- (2E)-3-[(2,3-Dimethylphenyl)amino]-1-(thiophen-2-yl)prop-2-en-1-one (CAS 1164526-97-9)
- 6-Acetyl-2-(3,5-dimethylphenyl)-1,2,4-triazine-3,5(2H,4H)-dione (CAS 478048-44-1)
- 2-(((2,3-Dimethylphenyl)amino)methyl)-6-methoxyphenol (CAS 1021054-01-2)
Recommended Standards
- 5-(4-methoxyphenyl)-3H,4H-thieno[2,3-d]pyrimidin-4-one (CAS 17537-76-7)
- Methyl 2-thien-2-ylimidazo[1,2-a]pyridine-6-carboxylate (CAS 1891281-74-5)
- (2E)-2-(5-Amino-1,3,4-thiadiazol-2-yl)-3-(4-methoxyphenyl)prop-2-enenitrile (CAS 170802-09-2)
- (2E)-2-(5-Acetyl-4-methyl-1,3-thiazol-2-yl)-3-(furan-2-yl)prop-2-enenitrile (CAS 400088-44-0)
- 1-(2-Bromo-1-(3-methoxypropoxy)ethyl)-2-methylbenzene (CAS 1249305-40-5)
- 5-tert-Butyl-2-methyl-3-furoyl chloride (CAS 96543-75-8)
- (Z)-2-((E)-(methoxyimino)methyl)-3-(4-(trifluoromethyl)phenyl)acrylonitrile (CAS 337919-86-5)
- 5-((3-Carbamoylthiophen-2-yl)amino)-5-oxopentanoic acid (CAS 590376-37-7)
- 6-Chloro-7-ethyl-2-isopropyl-7H-purine (CAS 1708208-61-0)
- (2s)-3-Methyl-2-{[(propan-2-yloxy)carbonyl]amino}butanoic acid (CAS 140923-27-9)
- 6-Bromo-7-fluoro-3,4-dihydroquinoxalin-2(1H)-one (CAS 167415-29-4)
- Ethyl 3-(((4-chlorophenyl)sulfonyl)methyl)-4-nitrobenzoate (CAS 339101-60-9)
- 5-Formylfuran-2-carboxamide (CAS 42978-27-8)
- Peptide Impurity 12 (CAS CATO-CPTD788812)
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