5-methylsulfonyl-1H-1,2,4-triazole CAS 3589-05-7
| CAS No. | 3589-05-7 |
| Molecular Formula | C3H5N3O2S |
| Molecular Weight | 147.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, 5-methylsulfonyl-1H-1,2,4-triazole is typically white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 147.16 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
CATO supplies 5-methylsulfonyl-1H-1,2,4-triazole (CAS 3589-05-7), a certified reference material (molecular formula C3H5N3O2S, MW 147.16 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-methylsulfonyl-1H-1,2,4-triazole 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 | C3H5N3O2S |
| Molecular Weight | 147.16 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related methylsulfonyl Standards
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Recommended Standards
- 4-Amino-1-methylphosphinane 1-oxide (CAS 2375269-75-1)
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- Glyoxalic acid thiosemicarbazone (CAS 928-74-5)
- 2-((6-(Pyridin-3-yl)pyridazin-3-yl)oxy)ethan-1-amine (CAS 1283108-35-9)
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