3-(thiophen-2-yl)-4,5-dihydro-1,2,4-oxadiazol-5-one CAS 35637-09-3
| CAS No. | 35637-09-3 |
| Molecular Formula | C6H4N2O2S |
| Molecular Weight | 168.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
3-(thiophen-2-yl)-4,5-dihydro-1,2,4-oxadiazol-5-one (CAS 35637-09-3), molecular formula C6H4N2O2S and molecular weight 168.17 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, 3-(thiophen-2-yl)-4,5-dihydro-1,2,4-oxadiazol-5-one is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 168.17 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
As a certified reference material (CRM), 3-(thiophen-2-yl)-4,5-dihydro-1,2,4-oxadiazol-5-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 | C6H4N2O2S |
| Molecular Weight | 168.17 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.) | 1967 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
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Recommended Standards
- 2-Fluoro-N,5-dimethylnicotinamide (CAS 2167518-30-9)
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- 3-Amino-1-((1R,2R)-2-fluorocyclopropyl)pyridin-2(1H)-one (CAS 2271476-14-1)
- 5-(4-Ethylphenyl)cyclohexane-1,3-dione (CAS 1255147-00-2)
- 2-(Ethanesulfonyl)-1,2,3,4-tetrahydroisoquinolin-5-amine (CAS 1182836-84-5)
- 4-(4-Bromo-2,6-difluorobenzyl)morpholine (CAS 1092563-36-4)
- Olmesartan Impurity 22 (CAS 58954-23-7)
- Ethyl(4-methoxy-3,5-dimethylphenyl)sulfane (CAS 1314931-09-3)
- Celecoxib Impurity 67 (CAS 910303-54-7)
- 5-(Chloromethyl)-4-methyl-2-(2-methylphenyl)-1,3-oxazole (CAS 1206981-55-6)
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- 3-Fluoro-4-(3-(4-fluorophenyl)-1-methyl-1H-pyrazol-4-yl)picolinonitrile (CAS 1383377-50-1)
- D-[Phe]6-Liraglutide (CAS CATO-C4X-199235)
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