28240-68-8 Bis(dichlorophosphino)methane Methylenebis(dichlorophosphine) Methylenebis(phosphonous dichloride) CAS 28240-68-8
| CAS No. | 28240-68-8 |
| Molecular Formula | CH2Cl4P2 |
| Molecular Weight | 217.79 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 28240-68-8 Bis(dichlorophosphino)methane Methylenebis(dichlorophosphine) Methylenebis(phosphonous dichloride) 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.
28240-68-8 Bis(dichlorophosphino)methane Methylenebis(dichlorophosphine) Methylenebis(phosphonous dichloride) (CAS 28240-68-8) is a high-purity analytical reference standard with the molecular formula CH2Cl4P2 and a molecular weight of 217.79 g/mol.
The molecular framework of 28240-68-8 Bis(dichlorophosphino)methane Methylenebis(dichlorophosphine) Methylenebis(phosphonous dichloride) (CH2Cl4P2) is characterized by organophosphorus functionality, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | CH2Cl4P2 |
| Molecular Weight | 217.79 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | -1.0 |
| CAS Registry Year (est.) | 1965 |
| Halogen Content | Cl-containing |
Related Bis Standards
- 1,2-Bis(dichlorophosphino)ethane 1,2-Ethanediylbis[phosphonous dichloride] 28240-69-9 Ethylenebis(dichlorophosphine) P,P inverted exclamation marka-(1,2-Ethanediyl)bis(dichlorophosphane) (CAS 28240-69-9)
- Bis(dichlorophosphino)methylamine, min. 97% (CAS 17648-16-7)
- 1,2-Bis(dichlorophosphino)-1,2-dimethylhydrazine, min. 98% (CAS 37170-64-2)
- 1,2-Bis(dichlorophosphino)benzene (CAS 82495-67-8)
- 1,1'-Bis(dichlorophosphino)ferrocene, 98% (CAS 142691-70-1)
Recommended Standards
- 2-(3-chloro-1,2,4-triazin-6-yl)ethynyl-trimethyl-silane (CAS 2587399-75-3)
- 1,3-Di(1,3,2-dioxaborolan-2-yl)benzene (CAS 128796-40-7)
- n-((5-Chlorothiophen-2-yl)methyl)-3-methylbutan-1-amine (CAS 1021100-90-2)
- Dibromoacetic Acid (CAS 631-64-1)
- Methyl 3,5-dimethyl-4-(((trifluoromethyl)sulfonyl)oxy)benzoate (CAS 341006-48-2)
- 3,4-Dichloro-5-(trifluoromethyl)pyridine (CAS 1803848-20-5)
- 3,4-Dihydro-2h-1-benzopyran-8-sulfonyl chloride (CAS 1048970-15-5)
- 6-Fluoro-4-methyl-1,2,3,4-tetrahydroquinoline (CAS 946837-98-5)
- 5-Fluoro-3-(piperidin-4-ylmethyl)-1H-indole (CAS 75259-64-2)
- N-(prop-2-yn-1-yl)-2,3-dihydro-1H-inden-1-amine hydrochloride (CAS 1506-18-9)
- 1-Cyclohexyl-5-oxopyrrolidine-3-carboxylic acid (CAS 6304-56-9)
- rac-(1R,4S,5R)-2-azabicyclo[2.2.1]heptane-5-carbonitrile (CAS 1909287-58-6)
- tert-Butyl 3-((R)-2-(((benzyloxy)carbonyl)amino)-3-methoxy-3-oxopropyl)piperidine-1-carboxylate (CAS 1217536-28-1)
- [γ-Glu]15 Semaglutide (CAS CATO-C4X-222690)
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