6-(2-Hydroxyethyl)-2-(isopropylthio)-5-methyl-[1,2,4]triazolo[1,5-a]pyrimidin-7(4H)-one CAS 1708079-93-9
| CAS No. | 1708079-93-9 |
| Molecular Formula | C11H16N4O2S |
| Molecular Weight | 268.34 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 6-(2-Hydroxyethyl)-2-(isopropylthio)-5-methyl-[1,2,4]triazolo[1,5-a]pyrimidin-7(4H)-one (C11H16N4O2S) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
6-(2-Hydroxyethyl)-2-(isopropylthio)-5-methyl-[1,2,4]triazolo[1,5-a]pyrimidin-7(4H)-one (CAS 1708079-93-9), molecular formula C11H16N4O2S and molecular weight 268.34 g/mol, is a CATO reference standard with documented purity and traceability.
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.
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 | C11H16N4O2S |
| Molecular Weight | 268.34 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1994 |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Hydroxyethyl Standards
- 6-(2-Hydroxyethyl)-5-methyl-2-(propylthio)-[1,2,4]triazolo[1,5-a]pyrimidin-7(4H)-one (CAS 1708401-87-9)
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Recommended Standards
- 2-(2-Hydrazinylpyridin-4-yl)-4-phenylthiazole (CAS 1707727-53-4)
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- 4-(3-Methylphenyl)-5-(4-pyridinyl)-4h-1,2,4-triazole-3-thiol (CAS 16629-42-8)
- 2-(Benzylthio)-3-phenylthieno[3,2-d]pyrimidin-4(3H)-one (CAS 338417-81-5)
- 3-Methyl-6,7-dihydro-3H-purin-6-amine (CAS 958733-34-1)
- Ethyl 3-(benzyloxy)-6-bromo-5-ethylpyrazine-2-carboxylate (CAS 1269028-25-2)
- n-Cyclopropyl-3-(3,4-difluorophenyl)propanamide (CAS 1209825-26-2)
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