5,6,7-Trimethyl-3-(thiophen-2-yl)pyrazolo[1,5-a]pyrimidine CAS 866132-20-9
| CAS No. | 866132-20-9 |
| Molecular Formula | C13H13N3S |
| Molecular Weight | 243.33 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality, 5,6,7-Trimethyl-3-(thiophen-2-yl)pyrazolo[1,5-a]pyrimidine is typically pale yellow to yellow low-melting solid. Its solid-state physicochemical attributes — including a molecular weight of 243.33 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).
5,6,7-Trimethyl-3-(thiophen-2-yl)pyrazolo[1,5-a]pyrimidine (CAS 866132-20-9), molecular formula C13H13N3S and molecular weight 243.33 g/mol, is a CATO reference standard with documented purity and traceability.
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 | C13H13N3S |
| Molecular Weight | 243.33 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
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Recommended Standards
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- Ethyl 3-bromo-4H-thieno[3,2-b]pyrrole-5-carboxylate (CAS 332099-35-1)
- 5-Bromo-2-(prop-2-yn-1-yl)pyridine (CAS 1260665-19-7)
- Smac-N7 Peptide (CAS 401913-57-3)
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