2,5-Dibromothiophene-3-carboxamide CAS 857979-62-5
| CAS No. | 857979-62-5 |
| Molecular Formula | C5H3Br2NOS |
| Molecular Weight | 284.96 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
2,5-Dibromothiophene-3-carboxamide (CAS 857979-62-5) is a high-purity analytical reference standard with the molecular formula C5H3Br2NOS and a molecular weight of 284.96 g/mol.
Structurally, 2,5-Dibromothiophene-3-carboxamide (C5H3Br2NOS) contains an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 284.96 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), 2,5-Dibromothiophene-3-carboxamide 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 | C5H3Br2NOS |
| Molecular Weight | 284.96 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Dibromothiophene Standards
- 4,5-Dibromothiophene-2-carboxamide (CAS 171851-27-7)
- 4,5-Dibromothiophene-3-carboxamide (CAS 98136-28-8)
- 4,5-Dibromothiophene-3-carboxylic acid (CAS 101079-66-7)
- 2,5-Dibromothiophene-3-carboxylic acid (CAS 7311-70-8)
- 3,4-Dibromothiophene-2-carboxylic acid (CAS 7311-66-2)
- 3,5-Dibromothiophene-2-carboxylic acid (CAS 7311-68-4)
- 4,5-Dibromothiophene-2-carboxylic Acid (CAS 6324-10-3)
- 2-Acetyl-4,5-dibromothiophene (CAS 7209-12-3)
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