(2,5-Dimethoxy-1,4-phenylene)bis(diisopropylphosphine oxide) CAS 1426397-81-0
| CAS No. | 1426397-81-0 |
| Molecular Formula | C20H36O4P2 |
| Molecular Weight | 402.44 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.
(2,5-Dimethoxy-1,4-phenylene)bis(diisopropylphosphine oxide) (CAS 1426397-81-0), molecular formula C20H36O4P2 and molecular weight 402.44 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C20H36O4P2, (2,5-Dimethoxy-1,4-phenylene)bis(diisopropylphosphine oxide) contains a phosphate ester group, a carboxylic acid group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 402.44 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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), (2,5-Dimethoxy-1,4-phenylene)bis(diisopropylphosphine 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 | C20H36O4P2 |
| Molecular Weight | 402.44 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1991 |
Related Dimethoxy Standards
- (S)-(2,2'-Dimethoxy-[1,1'-binaphthalene]-3,3'-diyl)diboronic acid (CAS 428874-68-4)
- (S)-2,2'-Dimethoxy-1,1'-binaphthyl-3,3'-diyldiboronic acid, 97% (CAS 220204-00-2)
- 3,5-Dimethoxy-4-methyl-2-nitrobenzoic acid (CAS 76447-19-3)
- (R)-6,7-Dimethoxy-4-(3-(quinoxalin-2-yloxy)pyrrolidin-1-yl)quinazoline (CAS 927691-21-2)
- 2-(4,5-Dimethoxy-2-nitrophenyl)-1H-imidazo[4,5-b]phenazine (CAS 303059-18-9)
- 2,5-Dimethoxy-N-((3-(4-methoxyphenyl)isoxazol-5-yl)methyl)benzenesulfonamide (CAS 339016-96-5)
- 3,6-Dimethoxy-6-(4-methoxyphenyl)-6H-chromeno[3,4-b]quinoxaline (CAS 1807-99-4)
- 4-(2,3-Dimethoxy-8-oxo-5,8,12,12a-tetrahydropyrazolo[3',4':4,5]pyrido[2,1-a]isoquinolin-11(6H)-yl)benzonitrile (CAS 685108-21-8)
Recommended Standards
- PEPA (CAS 141286-78-4)
- Methyltetrazine-PEG5-alkyne (CAS 1802907-97-6)
- Di-tert-butyl 3-(benzyloxy)-4-oxo-4H-pyran-2,5-dicarboxylate (CAS 1332856-34-4)
- (2s)-2-amino-3-hydroxy-n-[2-methoxy-5-[(1z)-2-(3,4,5-trimethoxyphenyl)ethenyl]phenyl]propanamide (S,Z)-2-Amino-3-hydroxy-N-(2-methoxy-5-(3,4,5-trimethoxystyryl)phenyl)propanamide 181816-48-8 ave-8062 ombrabulin ombrabulin(ave-8062) propanamide,2-amino-3-hydroxy-n-[2-methoxy-5-[(1z)-2-(3,4,5-trimethoxyphenyl)ethenyl]phenyl]-,(2s)- (CAS 181816-48-8)
- (R)-3-(Benzo[d][1,3]dioxol-5-yl)-2-(((tert-butoxycarbonyl)amino)methyl)propanoic acid (CAS 1260606-71-0)
- tert-butyl 4-amino-3-hydroxypiperidine-1-carboxylate (CAS 203503-03-1)
- Methyl N-(methylsulfonyl)-N-(pyridin-3-yl)glycinate (CAS 1573548-49-8)
- 2-(tert-Butoxy)-3-isopropoxyphenol (CAS 1243405-04-0)
- (Morpholinomethylene)bis(phosphonic acid) (CAS 32545-75-8)
- 1-(3-(N-(2,3-Dihydroxypropyl)acetamido)-5-((2,3-dihydroxypropyl)carbamoyl)-2,4,6-triiodobenzamido)-3-hydroxypropan-2-yl acetate (Iodixanol Impurity) (CAS 2730989-02-1)
- 3-CHloro-pyrazolo[1,5-a]pyrimidin-7-ol (CAS 2092930-03-3)
- 3-Aminopyrazolo[1,5-α]pyrimidine (CAS 232600-93-0)
- 2-Chloro-6-fluoro-3-methylphenylboronic acid pinacol ester (CAS 1688672-06-1)
- Pancreatic Polypeptide (human) trifluoroacetate salt (CAS 75976-10-2)
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