4-[5-(pyridin-3-yl)-1,2,4-oxadiazol-3-yl]phenol CAS 40678-80-6
| CAS No. | 40678-80-6 |
| Molecular Formula | C13H9N3O2 |
| Molecular Weight | 239.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-[5-(pyridin-3-yl)-1,2,4-oxadiazol-3-yl]phenol (CAS 40678-80-6), molecular formula C13H9N3O2 and molecular weight 239.23 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, 4-[5-(pyridin-3-yl)-1,2,4-oxadiazol-3-yl]phenol is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 239.23 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 4-[5-(pyridin-3-yl)-1,2,4-oxadiazol-3-yl]phenol 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 | C13H9N3O2 |
| Molecular Weight | 239.23 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1968 |
| Nitrogen Atoms | 3 |
Related pyridin Standards
- 2-Pyridin-2-yl-benzofuran-5-carboxylic acid (CAS 1154060-90-8)
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- 2-(Pyridin-2-yl)-1H-benzo[d]imidazole-7-carboxylic acid (CAS 124340-85-8)
- 2-(Pyridin-3-yl)-1H-benzo[d]imidazole-4-carboxylic acid (CAS 124340-89-2)
- 2-(Pyridin-4-yl)-1H-benzo[d]imidazole-7-carboxylic acid (CAS 124340-93-8)
- 2-(Pyridin-3-yl)imidazo[1,2-a]pyridine-6-carboxylic acid (CAS 1270936-29-2)
- 2-(Pyridin-2-yl)-2H-[1,3]dioxolo[4,5-f]indazole (CAS 1352305-23-7)
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Recommended Standards
- 4'-[(2-Hydroxyethyl)amino]-3'-nitroacetanilide (CAS 34572-59-3)
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- 4-(Methylamino)-6-morpholino-1,3,5-triazine-2-carboxylic acid (CAS 585557-38-6)
- 4-Hydroxy-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile (CAS 2068064-96-8)
- Tsugalactone (CAS 85699-62-3)
- 3-(1-Benzylpiperidin-4-yl)-3H-imidazo[4,5-b]pyridine (CAS 301220-34-8)
- Methyl 4-ethyl-5-methyl-3-propyl-1H-pyrrole-2-carboxylate (CAS 218774-45-9)
- 5-(tert-Butyl)-1H-benzo[d][1,2,3]triazole (CAS 38826-84-5)
- Methyl 3-formyl-1H-pyrrolo[3,2-b]pyridine-5-carboxylate (CAS 1190311-00-2)
- (1-(2-(M-tolyloxy)ethyl)piperidin-4-yl)methanol (CAS 1226299-13-3)
- 4-[(Methylsulfonyl)(phenyl)amino]butanoic acid (CAS 1183951-26-9)
- 3-((Methylamino)methyl)tetrahydrothiophene 1,1-dioxide hydrochloride (CAS 3193-52-0)
- GST-HG171 Impurity 1 (CAS CATO-C4X-30601)
- C-Peptide (Proinsulin) (CAS 59112-80-0)
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