2,2'-((1,2-Phenylenebis(azanylylidene))bis(methanylylidene))bis(4-bromophenol) CAS 29979-27-9
| CAS No. | 29979-27-9 |
| Molecular Formula | C20H14Br2N2O2 |
| Molecular Weight | 474.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2,2'-((1,2-Phenylenebis(azanylylidene))bis(methanylylidene))bis(4-bromophenol) (CAS 29979-27-9), molecular formula C20H14Br2N2O2 and molecular weight 474.15 g/mol, is a CATO reference standard with documented purity and traceability.
2,2'-((1,2-Phenylenebis(azanylylidene))bis(methanylylidene))bis(4-bromophenol) (C20H14Br2N2O2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, bromine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 2,2'-((1,2-Phenylenebis(azanylylidene))bis(methanylylidene))bis(4-bromophenol) 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 | C20H14Br2N2O2 |
| Molecular Weight | 474.15 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1965 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Phenylenebis Standards
- 5,5'-(1,2-Phenylenebis(ethyne-2,1-diyl))bis(3-(tert-butyl)-2-hydroxybenzaldehyde) (CAS 955949-60-7)
- 5,5'-(1,3-Phenylenebis(ethyne-2,1-diyl))bis(3-(tert-butyl)-2-hydroxybenzaldehyde) (CAS 943407-01-0)
- 5,5'-(1,4-Phenylenebis(ethyne-2,1-diyl))bis(3-(tert-butyl)-2-hydroxybenzaldehyde) (CAS 705930-82-1)
- 1,4-Phenylenebis(1,4-bipiperidin-1-ylmethanone) (CAS 1418741-86-2)
- 5,5'-(1,3-Phenylenebis(methylene))bis(oxy)diisophthalic acid (CAS 147566-76-5)
- 2,2'-((((1,4-Phenylenebis(methylene))bis(azanediyl))bis(4,1-phenylene))bis(oxy))bis(2-methylpropanoic acid) (CAS 385437-91-2)
- 1,4-Phenylenebis((4-(tert-butyl)-2,6-dimethylphenyl)methanone) (CAS 911836-46-9)
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Recommended Standards
- Ethyl 2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9-hexadecafluorononanoate (CAS 1799-47-9)
- 2,5-Bis(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)-1,3,4-oxadiazole (CAS 1116122-85-0)
- 1,4-Dibutoxy-2,5-diiodobenzene (CAS 145483-70-1)
- Zinc bis(diisobutyldithiocarbamate) (CAS 36190-62-2)
- 2-[Difluoro-(3,4,5-trifluorophenoxy)Methyl]-5-(4-ethylphenyl)-1,3-difluoro-benzene (CAS 303186-19-8)
- (3-(2-Bromothiazol-4-yl)propyl)phosphonic acid (CAS 2751621-31-3)
- (4-((4-Chloro-1H-pyrazol-1-yl)methyl)phenyl)methanamine (CAS 957490-92-5)
- 6-((1H-Pyrazol-1-yl)methyl)-4-methoxybenzo[d]isoxazol-3-amine (CAS 2568912-43-4)
- 2-(Pyrrolidin-2-yl)-1,3-oxazole (CAS 1313729-35-9)
- Palbociclib Impurity 206 (CAS CATO-C4X-1125206)
- 3-(Tert-butyl)-8b-hydroxy-4-oxo-4,8b-dihydroindeno[1,2-c]pyrazole-1(3aH)-carboxamide (CAS 87206-99-3)
- 2,5-Dimethylcyclohexanone(mixture of isomers) (CAS 932-51-4)
- Zirconium(IV)sulfide (CAS 12039-15-5)
- Semaglutide impurity 28 (CAS CATO-C4X-222628)
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