5-Ethyl-8,9,10,11-tetrahydrobenzo[4,5]thieno[3,2-e][1,2,4]triazolo[4,3-c]pyrimidine CAS 294668-18-1
| CAS No. | 294668-18-1 |
| Molecular Formula | C13H14N4S |
| Molecular Weight | 258.34 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-Ethyl-8,9,10,11-tetrahydrobenzo[4,5]thieno[3,2-e][1,2,4]triazolo[4,3-c]pyrimidine (C13H14N4S) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality. Its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
5-Ethyl-8,9,10,11-tetrahydrobenzo[4,5]thieno[3,2-e][1,2,4]triazolo[4,3-c]pyrimidine (CAS 294668-18-1) is a high-purity analytical reference standard with the molecular formula C13H14N4S and a molecular weight of 258.34 g/mol.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO manufactures 5-Ethyl-8,9,10,11-tetrahydrobenzo[4,5]thieno[3,2-e][1,2,4]triazolo[4,3-c]pyrimidine 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 | C13H14N4S |
| Molecular Weight | 258.34 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.) | 2025 |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
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Recommended Standards
- 5,6,8-Trimethyl-3-(methylsulfanyl)-5H-[1,2,4]triazino[5,6-b]indole (CAS 497060-51-2)
- 6-(4-Isopropylphenyl)-3-methyl-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazole (CAS 945369-42-6)
- 5,5'-(Thiophen-2-ylmethylene)bis(2-methylfuran) (CAS 874213-20-4)
- 6-(Phenethylthio)-9-propyl-9H-purin-2-amine (CAS 93017-05-1)
- Butyl 4-(4-(tert-butoxycarbonyl)piperazin-1-yl)-6,8-difluoroquinoline-2-carboxylate (CAS 1130309-31-7)
- 2-(2-Methylphenyl)-6h,7h-[1,3]oxazolo[5,4-d]pyrimidin-7-one (CAS 938007-09-1)
- Methyl (1S,2R)-2-aminocyclopentane-1-carboxylate (CAS 362485-20-9)
- 2,6-Bis(4-methoxybenzylidene)cyclohexanone (CAS 6275-32-7)
- 7-amino-2,3-dihydro-1,4-benzodioxine-5-carboxylic acid (CAS 66410-92-2)
- 1,3-Dimethyl-5-(pyridin-2-ylsulfanyl)-1h-pyrazol-4-amine (CAS 1157093-59-8)
- 8-bromo-cGMP sodium salt (CAS 51116-01-9)
- N-(4-fluorobenzyl)pentan-2-amine (CAS 776296-33-4)
- 4,9-Diphenyl-3a,4,9,9a-tetrahydro-4,9-epoxynaphtho[2,3-c]furan-1,3-dione (CAS 75925-22-3)
- D-Phe22-Tirzepatide (CAS CATO-CPTD788912)
Why CATO?
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