3,5-Dibromo-1H-indole CAS 81387-89-5
| CAS No. | 81387-89-5 |
| Molecular Formula | C8H5Br2N |
| Molecular Weight | 274.94 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 3,5-Dibromo-1H-indole 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.
3,5-Dibromo-1H-indole (CAS 81387-89-5) is a high-purity analytical reference standard with the molecular formula C8H5Br2N and a molecular weight of 274.94 g/mol.
3,5-Dibromo-1H-indole (C8H5Br2N) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, bromine substitution. Halogen substitution raises its density and boiling point; 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.
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 | C8H5Br2N |
| Molecular Weight | 274.94 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1980 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
Related Dibromo Standards
- 4,5-Dibromo-1H-indole (CAS 1227571-79-0)
- 2,5-Dibromo-1H-indole (CAS 1240045-42-4)
- 2,4-Dibromo-6-methylbenzonitrile (CAS 1349718-92-8)
- 1,3-dibromo-2-isocyano-5-methylbenzene (CAS 730971-40-1)
- 2,4-Dibromo-6-ethynylaniline (CAS 543740-86-9)
- 2,4-Dibromo-6-methylphenyl isocyanide (CAS 730971-42-3)
- 2,6-Dibromo-4-methylbenzonitrile (CAS 59596-31-5)
- 3,6-Dibromo-1H-indole (CAS 74076-56-5)
Recommended Standards
- 2-Bromo-4-(bromomethyl)benzonitrile (CAS 89892-38-6)
- 3-Bromo-4-(bromomethyl)benzonitrile (CAS 89892-39-7)
- 2,4-dibromophenyl acetonitrile (CAS 66246-16-0)
- 4,6-Dibromo-1H-indole (CAS 99910-50-6)
- Methyl 5-bromo-2-acetamidopyridine-4-carboxylate (CAS 1820684-64-7)
- Methyl 2-amino-2-(3-bromo-4-methoxyphenyl)acetate (CAS 1218371-85-7)
- Mono(2-methylpentyl) Phthalate (CAS 648412-67-3)
- 3-[3-(2-Fluorophenyl)-1,2,4-oxadiazol-5-yl]-1-methyl-4,5,6,7-tetrahydro-1H-pyrazolo[4,3-c]pyridine hydrochloride (CAS 1354550-86-9)
- 2-Bromo-N-(1-hydroxy-2-methylpropan-2-yl)-5-methoxybenzamide (CAS 56658-05-0)
- BPO-27 (Racemate) (CAS 1314873-02-3)
- 6-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)naphthalen-2-amine (CAS 1312611-42-9)
- 4-Bromo-5-cyano-2-iodobenzoic acid (CAS 1804381-86-9)
- (S)-3-Pyrrolidinemethanol (CAS 110013-19-9)
- Semaglutide Impurity 21(HO-Ste-L-γGlu-AEEA-AEEA-OH) (CAS 1335440-44-2)
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