3-(5-bromothiophen-2-yl)-1H-pyrazol-5-amine CAS 502133-10-0
| CAS No. | 502133-10-0 |
| Molecular Formula | C7H6BrN3S |
| Molecular Weight | 244.11 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.
CATO supplies 3-(5-bromothiophen-2-yl)-1H-pyrazol-5-amine (CAS 502133-10-0), a certified reference material (molecular formula C7H6BrN3S, MW 244.11 g/mol) for analytical method development and quality control.
3-(5-bromothiophen-2-yl)-1H-pyrazol-5-amine (C7H6BrN3S) 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 aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C7H6BrN3S |
| Molecular Weight | 244.11 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.) | 1984 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
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Recommended Standards
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- 2-Bromo-6-methoxybenzothiazole (CAS 2941-58-4)
- 4,4,5,5,6,6,6-Heptafluorohexane-1,2-diol (CAS 1992-91-2)
- 4-Hydroxybicyclo[2.2.2]octane-1-carbonitrile (CAS 72948-86-8)
- 2-Phenoxy-5-(piperidin-2-yl)pyridine (CAS 1352514-76-1)
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- Methyl 4-cyano-5-(trifluoromethyl)thiophene-2-carboxylate (CAS 2168855-19-2)
- 19-Hydroxy Androstendione-19-d2 19-Hydroxyandrost-4-ene-3,17-dione-19,19-d2 71995-64-7 Androst-4-en-19-ol-3,17-dione-d2 Androst-4-ene-3,17-dione-19-ol-d2 NSC 74233-d2 (CAS 71995-64-7)
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- Semaglutide impurity 247 (CAS CATO-C4X-2226247)
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