2-(2-(4-Bromophenyl)-5,8-dioxaspiro-[3.4]octan-2-yl)isoindoline-1,3-dione CAS 1199556-86-9
| CAS No. | 1199556-86-9 |
| Molecular Formula | C20H16BrNO4 |
| Molecular Weight | 414.25 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-(2-(4-Bromophenyl)-5,8-dioxaspiro-[3.4]octan-2-yl)isoindoline-1,3-dione (CAS 1199556-86-9), molecular formula C20H16BrNO4 and molecular weight 414.25 g/mol, is a CATO reference standard with documented purity and traceability.
2-(2-(4-Bromophenyl)-5,8-dioxaspiro-[3.4]octan-2-yl)isoindoline-1,3-dione (C20H16BrNO4) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, bromine substitution. 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.
As a certified reference material (CRM), 2-(2-(4-Bromophenyl)-5,8-dioxaspiro-[3.4]octan-2-yl)isoindoline-1,3-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 | C20H16BrNO4 |
| Molecular Weight | 414.25 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
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Recommended Standards
- tert-Butyl 5-iodo-2-oxospiro[indoline-3,3'-pyrrolidine]-1'-carboxylate (CAS 2382973-41-1)
- 1-[2-(Difluoromethoxy)benzyl]-2-methyl-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzimidazole (CAS 1515924-46-5)
- 5-(Methylthio)-2-(tributylstannyl)pyridine (CAS 611168-64-0)
- 2-(2-Bromo-4-formyl-6-methoxyphenoxy)-N-(naphthalen-1-yl)acetamide (CAS 692279-89-3)
- Ethyl 4-methoxy-2-nitrobenzoate (CAS 13324-13-5)
- [5-(methoxymethyl)-4H-1,2,4-triazol-3-yl]methanamine hydrochloride (CAS 1955506-49-6)
- 2-(2-(4-Fluorophenyl)propan-2-yl)-5-iodothiophene (CAS 1638760-62-9)
- N-ArachidonylGABA (CAS 128201-89-8)
- N,5-Diphenylimidazo[1,5-a]pyrazin-8-amine (CAS 849199-96-8)
- (R)-2-(Piperidin-3-yl)propan-2-ol (CAS 1003639-50-6)
- Regadenoson Impurity 11 (CAS 24723-77-1)
- 6-Phenylfuro[2,3-b]pyrazine (CAS 66479-90-1)
- 1-Undecanoyl-rac-glycerol (CAS 64633-19-8)
- Tirzepatide Impurity 46 (CAS CATO-C4X-324046)
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