1-Ethyl-3-(thiophen-3-yl)-1,4,5,6-tetrahydropyrrolo[2,3-c]pyrazole CAS 641592-97-4
| CAS No. | 641592-97-4 |
| Molecular Formula | C11H13N3S |
| Molecular Weight | 219.31 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1-Ethyl-3-(thiophen-3-yl)-1,4,5,6-tetrahydropyrrolo[2,3-c]pyrazole (CAS 641592-97-4) is a high-purity analytical reference standard with the molecular formula C11H13N3S and a molecular weight of 219.31 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality, 1-Ethyl-3-(thiophen-3-yl)-1,4,5,6-tetrahydropyrrolo[2,3-c]pyrazole is typically off-white to pale yellow low-melting solid. Its solid-state physicochemical attributes — including a molecular weight of 219.31 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C11H13N3S |
| Molecular Weight | 219.31 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Ethyl Standards
- 1-Ethyl-3-(thiophen-2-yl)-1,4,5,6-tetrahydropyrrolo[2,3-c]pyrazole (CAS 641584-69-2)
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- 3-(Thiophen-2-ylthio)pyrazine-2-carbonitrile (CAS 882286-30-8)
- 2-methyl-6-(thiophen-3-yl)pyridine-3-carboxylic acid (CAS 1240527-66-5)
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