5-(3-Bromothiophen-2-yl)-1H-pyrazole CAS 166196-68-5
| CAS No. | 166196-68-5 |
| Molecular Formula | C7H5BrN2S |
| Molecular Weight | 229.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 5-(3-Bromothiophen-2-yl)-1H-pyrazole 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.
5-(3-Bromothiophen-2-yl)-1H-pyrazole (CAS 166196-68-5), molecular formula C7H5BrN2S and molecular weight 229.10 g/mol, is a CATO reference standard with documented purity and traceability.
5-(3-Bromothiophen-2-yl)-1H-pyrazole (C7H5BrN2S) contains a nitrile group, sulfur-containing functionality, bromine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C7H5BrN2S |
| Molecular Weight | 229.10 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.) | 2004 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Bromothiophen Standards
- 5-(5-Bromothiophen-2-yl)-1H-pyrazole (CAS 166196-67-4)
- 1-(5-Bromothiophen-3-yl)-1H-imidazole (CAS 201656-14-6)
- 2-(5-Bromothiophen-2-yl)furan (CAS 91891-82-6)
- 5-(5-Bromothiophen-2-yl)-1,3-oxazole (CAS 1268029-67-9)
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- 5-(5-Bromothiophen-2-yl)isoxazole (CAS 138716-31-1)
- 3-(5-Bromothiophen-2-yl)isoxazole (CAS 175205-66-0)
- 5-(5-Bromothiophen-2-yl)oxazole (CAS 321309-25-5)
Recommended Standards
- 3-Bromo-4-methylisothiazolo[5,4-b]pyridine (CAS 1706443-93-7)
- 3-Bromo-4-thiocyanatoaniline (CAS 16582-78-8)
- 7-Bromo-2-methylthiazolo[4,5-b]pyridine (CAS 1782717-22-9)
- 4-(Bromomethyl)-2,1,3-benzothiadiazole (CAS 16405-99-5)
- 1-[(3-aminophenyl)carbonyl]piperidin-3-ol (CAS 1155931-03-5)
- Allyl(4-chloro-3,5-dimethylphenyl)sulfane (CAS 1379369-17-1)
- 3-[[(3S)-1,1-dioxothiolan-3-yl]amino]propanoic acid (CAS 2742090-82-8)
- N-(benzo[d]thiazol-2-yl)furan-2-carboxamide (CAS 87874-18-8)
- 2-((2-(Trifluoromethyl)phenyl)amino)thiazole-4-carboxylic acid (CAS 1526823-08-4)
- Amlodipine Besylate (CAS 828247-64-9)
- 2-(Thiazol-2-yl)pyrimidine-5-carboxylic acid (CAS 1068975-58-5)
- 4-Bromo-5-(trifluoromethyl)-1H-benzo[d]imidazole (CAS 1360962-20-4)
- 5-Bromo-2-Iodopyrimidine (CAS 183438-24-6)
- (Glu1)-Fibrinopeptide B (human) (CAS 103213-49-6)
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