4-Bromo-7-chloro-1,3-dihydro-2H-benzo[d]imidazole-2-thione CAS 1388027-75-5
| CAS No. | 1388027-75-5 |
| Molecular Formula | C7H4BrClN2S |
| Molecular Weight | 263.54 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Bromo-7-chloro-1,3-dihydro-2H-benzo[d]imidazole-2-thione (CAS 1388027-75-5), molecular formula C7H4BrClN2S and molecular weight 263.54 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrile group, sulfur-containing functionality, chlorine/bromine substitution, an aromatic ring system, 4-Bromo-7-chloro-1,3-dihydro-2H-benzo[d]imidazole-2-thione is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 263.54 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
As a certified reference material (CRM), 4-Bromo-7-chloro-1,3-dihydro-2H-benzo[d]imidazole-2-thione 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 | C7H4BrClN2S |
| Molecular Weight | 263.54 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Halogen Content | Cl/Br-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
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Recommended Standards
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- 3-Chloro-5-(hydroxymethyl)benzonitrile (CAS 1021871-35-1)
- 6-bromo-7-methoxy-1H-benzimidazol-2-amine (CAS 1388059-91-3)
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