3,6-Bis(5-bromo-2-pyridinyl)-2,5-dihydropyrrolo[3,4-c]pyrrole-1,4-dione CAS 777079-50-2
| CAS No. | 777079-50-2 |
| Molecular Formula | C16H8Br2N4O2 |
| Molecular Weight | 448.07 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 3,6-Bis(5-bromo-2-pyridinyl)-2,5-dihydropyrrolo[3,4-c]pyrrole-1,4-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.
3,6-Bis(5-bromo-2-pyridinyl)-2,5-dihydropyrrolo[3,4-c]pyrrole-1,4-dione (CAS 777079-50-2), molecular formula C16H8Br2N4O2 and molecular weight 448.07 g/mol, is a CATO reference standard with documented purity and traceability.
3,6-Bis(5-bromo-2-pyridinyl)-2,5-dihydropyrrolo[3,4-c]pyrrole-1,4-dione (C16H8Br2N4O2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, bromine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
Physical & Chemical Properties
| Molecular Formula | C16H8Br2N4O2 |
| Molecular Weight | 448.07 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 | 4 |
Related Bis Standards
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- 9-(3-Bromo-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)-9H-carbazole (CAS 2121512-10-3)
- 5-Bromo-2-(2-(2,5-dibromophenyl)-1-iminoethyl)phenol (CAS 1585969-22-7)
- 4-Bromo-2,6-bis[(4S)-4,5-dihydro-4-phenyl-2-oxazolyl]-pyridine, 95% (CAS 1190936-03-8)
- 5-Bromo-4-methyl-1-(4-((7-methyl-2-propyl-3H-imidazo[4,5-b]pyridin-3-yl)methyl)phenyl)-1H-pyrrole-2-carbonitrile (CAS 142016-06-6)
- Ethyl 6-bromo-5-hydroxy-1-methyl-2-(3-(phenylthio)propyl)-1H-indole-3-carboxylate (CAS 1704066-69-2)
Recommended Standards
- 2,2-Difluoro-2-(1,1,2,2-tetrafluoro-2-(perfluorobutoxy)ethoxy)acetyl fluoride (CAS 172897-75-5)
- 4-((2,4-Dichlorobenzyl)oxy)-3-ethoxy-5-iodobenzonitrile (CAS 1706445-44-4)
- 2-(3-Chloro-5-(trifluoromethyl)pyridin-2-yl)-1-(5-(2,2,2-trichloroacetyl)-1H-pyrrol-3-yl)propan-1-one (CAS 339099-47-7)
- 1-[(2,4-Dichlorophenyl)methoxy]-3-[(3,4-dichlorophenyl)methyl]imidazolidine-2,4,5-trione (CAS 320422-88-6)
- 5-amino-1,3-thiazole-2-carbonitrile (CAS 860182-74-7)
- 3-acetyl-1-(3-aminophenyl)urea (CAS 1173087-46-1)
- 2-Amino-N-ethylbenzamide (CAS 32212-29-6)
- N-(2-Ethylphenyl)-3-(3-methoxyphenyl)-2-(2H-1,2,3,4-tetrazol-5-yl)propanamide (CAS 483993-38-0)
- Tert-butyl 4-(3-methoxyphenyl)-3-oxopiperidine-1-carboxylate (CAS 1354951-28-2)
- N-(Isopropyl(phenyl)-l4-sulfanylidene)-4-methylbenzenesulfonamide (CAS 18922-56-0)
- (S)-2-Amino-2-(2,3-dihydrobenzo[b][1,4]dioxin-6-yl)ethan-1-ol (CAS 1212972-65-0)
- 4-[(2-Methyl-4,5,6,7-tetrahydro-benzofuran-3-carbonyl)-amino]-butyric acid (CAS 335391-79-2)
- 1-Bromo-2-(ethylsulfonyl)-4-nitrobenzene (CAS 1375472-10-8)
- Peptide Impurity 26 (CAS 1350456-66-4)
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