Bis(3-bromophenyl)phenylphosphine Oxide CAS 1163698-32-5
| CAS No. | 1163698-32-5 |
| Molecular Formula | C18H13Br2OP |
| Molecular Weight | 436.08 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
CATO supplies Bis(3-bromophenyl)phenylphosphine Oxide (CAS 1163698-32-5), a certified reference material (molecular formula C18H13Br2OP, MW 436.08 g/mol) for analytical method development and quality control.
Owing to a steroid core, organophosphorus functionality, a hydroxyl group, an ether linkage, bromine substitution, Bis(3-bromophenyl)phenylphosphine Oxide is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 436.08 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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 | C18H13Br2OP |
| Molecular Weight | 436.08 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, 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.) | 1989 |
| Halogen Content | Br-containing |
Related Bis Standards
- Bis(4-bromophenyl)phenylphosphine Oxide (CAS 93869-52-4)
- 2-(2-((4-Bromophenyl)thio)-5-nitrophenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 2377609-06-6)
- N-(2-Bromophenyl)-1,1,1-trifluoro-N-((trifluoromethyl)sulfonyl)methanesulfonamide (CAS 1263376-75-5)
- N-(3-Bromophenyl)-1,1,1-trifluoro-N-((trifluoromethyl)sulfonyl)methanesulfonamide (CAS 1263377-36-1)
- N-(4-Bromophenyl)-1,1,1-trifluoro-N-((trifluoromethyl)sulfonyl)methanesulfonamide (CAS 191043-82-0)
- 2-[(4-Bromophenyl)sulfanyl]-6-(3,4-dichlorophenyl)pyridine-3-carbonitrile (CAS 252059-66-8)
- 3-((4-Bromophenyl)amino)-2-(3,4-dimethoxyphenyl)-1H-inden-1-one (CAS 1024337-22-1)
- 3-(((4-Bromophenyl)amino)methyl)-5,5-diphenylimidazolidine-2,4-dione (CAS 859-69-8)
Recommended Standards
- Benzenesulfonamide, 4-bromo-N-(4-bromo-2-nitrophenyl)- (CAS 10589-69-2)
- (2,5-Dibromophenyl)diphenylphosphineoxide (CAS 1629166-79-5)
- 2,8-Diiododibenzothiophene (CAS 105404-91-9)
- 2,2’-Diiodobiphenyl-4,4’-diamine (CAS 54391-31-0)
- 5-Chloro-7-methoxy-[1,2,4]triazolo[1,5-a]pyrimidine (CAS 89581-76-0)
- 7-Chloro-2,3-dihydro-1H-inden-1-ol (CAS 1215268-56-6)
- 4-Chlorophenyl 2-chloro-4-(trifluoromethyl)thiazole-5-carboxylate (CAS 72860-48-1)
- 3-Iodo-4-nitropyridine (CAS 89283-70-5)
- 5-((Methyl(prop-2-yn-1-yl)amino)methyl)quinolin-8-ol (CAS 766454-72-2)
- 2-Hydroxy-n-(prop-2-yn-1-yl)propanamide (CAS 1153760-77-0)
- Methyl 1-(4-bromophenoxy)cyclopropanecarboxylate (CAS 1399661-11-0)
- 6-(Naphthalen-2-ylsulfonyl)-5,6,7,8-tetrahydroquinazoline-2,4-diamine (CAS 60368-04-9)
- Tert-butyl 6-methyl-2-(2-oxo-2-phenylethyl)-2,7-diazaspiro[3.5]Nonane-7-carboxylate (CAS 1899102-31-8)
- Valosin Peptide (VQY), porcine (CAS 99510-37-9)
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