5-Bromo-1-methyl-1H,1'H-3,4'-biindole CAS 89346-31-6
| CAS No. | 89346-31-6 |
| Molecular Formula | C17H13BrN2 |
| Molecular Weight | 325.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-Bromo-1-methyl-1H,1'H-3,4'-biindole (CAS 89346-31-6) is a high-purity analytical reference standard with the molecular formula C17H13BrN2 and a molecular weight of 325.20 g/mol.
The molecular framework of 5-Bromo-1-methyl-1H,1'H-3,4'-biindole (C17H13BrN2) is characterized by a nitrogen-containing heterocyclic scaffold, a nitrile group, bromine substitution. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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.
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.
Physical & Chemical Properties
| Molecular Formula | C17H13BrN2 |
| Molecular Weight | 325.20 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1982 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
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Recommended Standards
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- 7-Chloro-2-(2-chlorostyryl)quinolin-4-amine (CAS 89810-96-8)
- 3-(3,5-Diamino-1H-pyrazol-1-yl)propanenitrile (CAS 68176-10-3)
- 2-(2,3-Dimethoxyphenyl)-2-(1H-indol-3-yl)ethan-1-amine hydrochloride (CAS 1049752-42-2)
- tert-butyl (3S)-3-(iodomethyl)pyrrolidine-1-carboxylate (CAS 224168-68-7)
- 1-Ethyl-4-ethynylbenzene (CAS 40307-11-7)
- Quinoline-7,8-diol (CAS 101724-22-5)
- 5-((5-Nitrofuran-2-yl)methylene)-2-thioxothiazolidin-4-one (CAS 13410-84-9)
- 2-Methoxy-6-(trifluoromethoxy)aniline (CAS 1261482-96-5)
- Semaglutide impurity 268 (CAS CATO-C4X-2226268)
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