4-Amino-6-methyl-3-(methylthio)-1,2,4-triazin-5(4H)-one CAS 18826-96-5
| CAS No. | 18826-96-5 |
| Molecular Formula | C5H8N4OS |
| Molecular Weight | 172.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Amino-6-methyl-3-(methylthio)-1,2,4-triazin-5(4H)-one (CAS 18826-96-5), molecular formula C5H8N4OS and molecular weight 172.21 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C5H8N4OS, 4-Amino-6-methyl-3-(methylthio)-1,2,4-triazin-5(4H)-one contains an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 172.21 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C5H8N4OS |
| Molecular Weight | 172.21 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) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1962 |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Amino Standards
- 2-Amino-N-(5-methyl-1,3,4-thiadiazol-2-yl)acetamide (CAS 1175844-13-9)
- 5-Amino-N,N-dimethyl-1,3,4-thiadiazole-2-carboxamide (CAS 1299431-26-7)
- 2-Amino-5-methylthiazole-4-carbohydrazide (CAS 1379308-65-2)
- 2-(2-Amino-1,3-thiazol-4-yl)acetohydrazide (CAS 63788-65-8)
- 2-amino-4-methyl-1,3-thiazole-5-carbohydrazide (CAS 63788-59-0)
- 4-Amino-5-(methylthio)-1H-pyrazole-3-carboxamide (CAS 28668-18-0)
- 5-Amino-2-(methylimino)-2,3-dihydrothiazole-4-carboxamide (CAS 52868-71-0)
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Recommended Standards
- 1,2-Difluoroadamantane (CAS 70422-22-9)
- 2-((1H-1,2,4-triazol-5-yl)thio)-N-methylacetamide (CAS 24706-69-2)
- 2-((4-Methyl-4h-1,2,4-triazol-3-yl)thio)acetamide (CAS 484654-67-3)
- 6-Hydrazinyl-2-(methylthio)pyrimidin-4(1H)-one (CAS 116222-18-5)
- 1217782-80-3 2,2,2-Trifluoro-N-methyl-N-[(7S)-5,6,7,9-tetrahydro-10-hydroxy-1,2,3-trimethoxy-9-oxobenzo[a]heptalen-7-yl]acetamide N-Trifluoroacetyl-N-methyl-deacetylcolchiceine (CAS 1217782-80-3)
- 2-Amino-5-benzylidene-1-methyl-1H-imidazol-4(5H)-one (CAS 6964-11-0)
- 1-([1,2,4]Triazolo[4,3-b]pyridazin-6-yl)piperidin-4-amine (CAS 1525554-57-7)
- 3-Amino-3-(2,4,5-trifluorophenyl)propanoic acid (CAS 682803-77-6)
- 4-[(Butan-2-yl)amino]benzonitrile (CAS 213765-79-8)
- (1R)-1-(Pyrimidin-5-yl)ethan-1-amine (CAS 179601-39-9)
- 1-(8-Chloro-1-(trifluoromethyl)-[1,2,4]triazolo[4,3-a]quinoxalin-4-yl)piperidin-4-one O-(2-chlorobenzyl) oxime (CAS 400089-07-8)
- tert-Butyl 4-(4-bromo-5-(difluoromethyl)-1H-pyrazol-1-yl)piperidine-1-carboxylate (CAS 1449117-77-4)
- 1-{1-[3-(4-chlorophenyl)-1,2,4-oxadiazol-5-yl]ethyl}piperazine (CAS 1000933-05-0)
- Protein Kinase C (19-36) Peptide (CAS 113731-96-7)
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