5,7-dimethyl[1,3,4]thiadiazolo[3,2-a]pyrimidin-4-ium-2-thiolate CAS 87253-83-6
| CAS No. | 87253-83-6 |
| Molecular Formula | C7H7N3S2 |
| Molecular Weight | 197.28 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C7H7N3S2, 5,7-dimethyl[1,3,4]thiadiazolo[3,2-a]pyrimidin-4-ium-2-thiolate contains a nitrile group, sulfur-containing functionality, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 197.28 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).
5,7-dimethyl[1,3,4]thiadiazolo[3,2-a]pyrimidin-4-ium-2-thiolate (CAS 87253-83-6), molecular formula C7H7N3S2 and molecular weight 197.28 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C7H7N3S2 |
| Molecular Weight | 197.28 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.) | 1981 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 2 |
Related dimethyl Standards
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Recommended Standards
- 5-(Thiophen-2-ylmethyl)-1,3,4-thiadiazol-2-amine (CAS 299933-43-0)
- 5-Methoxybenzo[d]thiazole-2(3H)-thione (CAS 55690-60-3)
- 5-(Pyridin-2-yl)-4,5-dihydro-1,3,4-thiadiazole-2-thiol (CAS 5757-43-7)
- 6H,7H,8H,9H,10H-Cyclohepta[b]quinoline (CAS 7092-81-1)
- 1-((3-Bromobenzyl)oxy)-2,4-dimethylbenzene (CAS 1285646-40-3)
- Methyl 3-(tosyloxy)thiophene-2-carboxylate (CAS 181226-89-1)
- 3-Amino-pyridine-2-carbothioic acid amide (CAS 42242-12-6)
- SDZ-201106 Impurity 3 (CAS 73907-82-1)
- 4-(4-Methoxyphenyl)-2-[4-(4-methoxyphenyl)-1,3-thiazol-2-yl]-1,3-thiazole (CAS 59543-71-4)
- 2-Fluoro-4-hydroxy-N-(propan-2-yl)benzamide (CAS 1538668-95-9)
- 3,3,3',3'-Tetramethyl-5,5'-dinitro-2,2',3,3'-tetrahydro-1,1'-spirobi[indene]-6,6'-diol (CAS 158518-97-9)
- Diisopropyl ((3-chloro-4-fluorophenyl)carbamoyl)phosphoramidate (CAS 648859-09-0)
- (E)-1-Methyl-4-(4-nitrostyryl)pyridin-1-ium iodide (CAS 25565-20-2)
- Insulin Degludec Impurity 5 (CAS CATO-C4X-21575)
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