3,6-Bis(4-bromophenyl)-2,5-diethylpyrrolo[3,4-c]pyrrole-1,4(2H,5H)-dione CAS 763522-41-4
| CAS No. | 763522-41-4 |
| Molecular Formula | C22H18Br2N2O2 |
| Molecular Weight | 502.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 3,6-Bis(4-bromophenyl)-2,5-diethylpyrrolo[3,4-c]pyrrole-1,4(2H,5H)-dione is closely related to a steroid core, an amide group, a hydroxyl group, an ether linkage, bromine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
3,6-Bis(4-bromophenyl)-2,5-diethylpyrrolo[3,4-c]pyrrole-1,4(2H,5H)-dione (CAS 763522-41-4), molecular formula C22H18Br2N2O2 and molecular weight 502.20 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 3,6-Bis(4-bromophenyl)-2,5-diethylpyrrolo[3,4-c]pyrrole-1,4(2H,5H)-dione (C22H18Br2N2O2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 14.0, corresponding to approximately 14 ring(s) or double-bond equivalent(s). With a molecular weight of 502.20 g/mol, it falls into the moderately-high-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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), 3,6-Bis(4-bromophenyl)-2,5-diethylpyrrolo[3,4-c]pyrrole-1,4(2H,5H)-dione 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 | C22H18Br2N2O2 |
| Molecular Weight | 502.20 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.) | 1986 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Bis Standards
- 2-((4-(4-Bromophenyl)-5-(pyridin-4-yl)-4H-1,2,4-triazol-3-yl)thio)-N-(3,4-difluorophenyl)acetamide (CAS 477332-88-0)
- 5-((4-Bromophenyl)thio)-4-(((4-chlorophenyl)thio)methyl)-1-methyl-3-phenyl-1H-pyrazole (CAS 318959-34-1)
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Recommended Standards
- Gallium 8-Hydroxyquinolinate (CAS 14642-34-3)
- 3-(5-((4-Bromobenzyl)thio)-4-(4-bromophenyl)-4H-1,2,4-triazol-3-yl)pyridine (CAS 676245-38-8)
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- 4-(5-((3-Bromobenzyl)thio)-4-(4-bromophenyl)-4H-1,2,4-triazol-3-yl)pyridine (CAS 618432-42-1)
- 2-CYANOPHENYLBORONIC ACID NEOPENTYL ESTER (CAS 214360-47-1)
- 4,4',4'',4'''-((5,5'-(Carbonylbis(azanediyl))bis(isophthaloyl))tetrakis(azanediyl))tetrakis(benzene-1,3-disulfonic acid) (CAS 389142-38-5)
- Dibenzyl Ether (CAS 103-50-4)
- 2-(4-Fluorophenyl)-5-methyl-4,5,6,7-tetrahydro-2H-pyrazolo[3,4-b]pyridin-3-ol (CAS 1710195-14-4)
- 6-Heptadecyl-2-thioxo-2,3-dihydropyrimidin-4(1H)-one (CAS 56510-28-2)
- 6-Hydroxy-2-methyl-5,7-dipropyl-1,3-diazaadamantane-2-carboxylic acid (CAS 1171935-08-2)
- (2R,3R,4R,5R)-2-(Acetoxymethyl)-5-(2,6-diiodo-9H-purin-9-yl)tetrahydrofuran-3,4-diyl diacetate (CAS 94042-05-4)
- 2-(3,4-Dimethoxyphenyl)ethyl N-(3-methoxythiophen-2-yl)carbamate (CAS 477845-96-8)
- Amlodipine (CAS 88150-42-9)
- Semaglutide Impurity 150 xTFA (CAS CATO-C4X-2226150)
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