5-Ethyl-6-methyl-2-(m-tolyl)thieno[2,3-d]pyrimidine-4-thiol CAS 917749-31-6
| CAS No. | 917749-31-6 |
| Molecular Formula | C16H16N2S2 |
| Molecular Weight | 300.44 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-Ethyl-6-methyl-2-(m-tolyl)thieno[2,3-d]pyrimidine-4-thiol (CAS 917749-31-6), molecular formula C16H16N2S2 and molecular weight 300.44 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality, 5-Ethyl-6-methyl-2-(m-tolyl)thieno[2,3-d]pyrimidine-4-thiol is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 300.44 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 5-Ethyl-6-methyl-2-(m-tolyl)thieno[2,3-d]pyrimidine-4-thiol under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C16H16N2S2 |
| Molecular Weight | 300.44 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 2 |
Recommended Standards
- 4-Ketoretinol (CAS 62702-55-0)
- 5-Ethyl-6-methyl-2-(o-tolyl)thieno[2,3-d]pyrimidine-4-thiol (CAS 917749-37-2)
- 4-Chloro-5-iodo-3-nitropyridin-2(1H)-one (CAS 2273883-66-0)
- 6α-Methylandrost-4-ene-3,17-dione (CAS 2241-94-3)
- 2-(Difluoromethyl)-5-oxopyrrolidine-2-carboxylic acid (CAS 95755-28-5)
- Methyl 2-amino-5-(tert-butyl)thiophene-3-carboxylate (CAS 216574-71-9)
- 4-(2,4-Difluorobenzoyl)-N-methyl-1H-pyrrole-2-carboxamide (CAS 692287-83-5)
- 6-(Azepan-1-yl)-4-methylnicotinonitrile (CAS 1355195-62-8)
- Pseudoionone（Mixture of Isomers） (CAS 141-10-6)
- (4-Fluoro-5-methylpyridin-3-yl)boronic acid (CAS 2225155-44-0)
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- 1-(3,6-dibromo-9H-carbazol-9-yl)-3-(piperazin-1-yl)propan-2-ol dihydrochloride (CAS 329349-20-4)
- Polyphemusin II-Derived Peptide (CAS 229030-20-0)
Why CATO?
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