5-Methyl-3-(methylthio)-[1,2,4]triazolo[4,3-a]pyrimidin-7(8H)-one CAS 91912-60-6
| CAS No. | 91912-60-6 |
| Molecular Formula | C7H8N4OS |
| Molecular Weight | 196.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C7H8N4OS, 5-Methyl-3-(methylthio)-[1,2,4]triazolo[4,3-a]pyrimidin-7(8H)-one contains an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 196.23 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO supplies 5-Methyl-3-(methylthio)-[1,2,4]triazolo[4,3-a]pyrimidin-7(8H)-one (CAS 91912-60-6), a certified reference material (molecular formula C7H8N4OS, MW 196.23 g/mol) for analytical method development and quality control.
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.
As a certified reference material (CRM), 5-Methyl-3-(methylthio)-[1,2,4]triazolo[4,3-a]pyrimidin-7(8H)-one meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C7H8N4OS |
| Molecular Weight | 196.23 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1983 |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Methyl Standards
- (2-(Methylthio)furo[2,3-d]pyrimidin-6-yl)methanol (CAS 649558-78-1)
- (E)-3-(2-(Methylthio)pyrimidin-5-yl)acrylic acid (CAS 915924-30-0)
- 1-Methyl-6-(methylthio)-1,2-dihydro-3H-pyrazolo[3,4-d]pyrimidin-3-one (CAS 89853-01-0)
- 1-Methyl-6-(methylthio)-1H-pyrazolo[3,4-d]pyrimidin-4(5H)-one (CAS 5417-83-4)
- 2-(2-(Methylthio)pyrimidin-4-yl)malonaldehyde (CAS 77168-37-7)
- 5-Methyl-2-(methylthio)-[1,2,4]triazolo[1,5-a]pyrimidin-7(4H)-one (CAS 89853-03-2)
- 5-Methyl-2-(methylthio)-[1,2,4]triazolo[1,5-a]pyrimidin-7-ol (CAS 40775-78-8)
- 7-Methyl-2-(methylthio)-3H-purin-6(7H)-one (CAS 39013-80-4)
Recommended Standards
- 5-methyl-5-(thiophen-3-yl)imidazolidine-2,4-dione (CAS 858206-54-9)
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- 5-Amino-3-ethyl-3H-[1,2,3]triazolo[4,5-d]pyrimidine-7(6H)-thione (CAS 5460-90-2)
- 6-(Hydroxymethyl)-2H-pyrido[3,2-b][1,4]thiazin-3(4H)-one (CAS 443956-15-8)
- 1-(4-(4-Methyl-1h-imidazol-1-yl)phenyl)ethan-1-one (CAS 142161-53-3)
- (2,3-Difluorophenyl)(6-methylpyridin-2-yl)methanone (CAS 1187164-58-4)
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