5-(Furan-3-yl)oxazole CAS 681135-52-4
| CAS No. | 681135-52-4 |
| Molecular Formula | C7H5NO2 |
| Molecular Weight | 135.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-(Furan-3-yl)oxazole (CAS 681135-52-4), molecular formula C7H5NO2 and molecular weight 135.12 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 5-(Furan-3-yl)oxazole (C7H5NO2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 135.12 g/mol, it falls into the low-molecular-weight range. 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.
As a certified reference material (CRM), 5-(Furan-3-yl)oxazole 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 | C7H5NO2 |
| Molecular Weight | 135.12 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; 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.) | 1985 |
| Nitrogen Atoms | 1 |
Related Furan Standards
- 3-(Furan-2-yl)isoxazole (CAS 651059-65-3)
- 3-(Furan-3-yl)-3-oxopropanenitrile (CAS 96220-13-2)
- 5-(Furan-2-yl)-3,4-dihydro-2H-pyrrole (CAS 104704-31-6)
- N-(Furan-2-ylmethyl)prop-2-yn-1-amine (CAS 53175-35-2)
- 3-(Furan-2-yl)propiolic Acid (CAS 4582-65-4)
- 3-(Furan-3-yl)prop-2-ynoic acid (CAS 54345-10-7)
- 1-(Furan-2-yl)-1H-imidazole (CAS 191733-31-0)
- 2-(Furan-2-yl)-1H-imidazole (CAS 89795-49-3)
Recommended Standards
- 5-(1H-Pyrazol-3-yl)oxazole (CAS 84978-70-1)
- 5-Formyl-1-methyl-1H-imidazole-2-carbonitrile (CAS 944900-78-1)
- 4-Nitrosobenzaldehyde (CAS 74663-99-3)
- 5-Formyl-1-methyl-1H-imidazole-4-carbonitrile (CAS 916257-35-7)
- 1-((4-Hydroxybenzyl)oxy)propan-2-one (CAS 952101-44-9)
- 4-[(benzyloxy)methyl]benzene-1-carboximidamide hydrochloride (CAS 1221725-98-9)
- (4S,5S)-N,N,5-Trimethyl-4,5-dihydrooxazole-4-carboxamide (CAS 121687-16-9)
- 2-Oxo-2-(2-(trifluoromethyl)phenyl)acetic acid (CAS 467435-08-1)
- 1-Iodo-4-[(methylsulfanyl)methyl]benzene (CAS 117760-03-9)
- 5-chloropyridazin-4-ol (CAS 1245643-70-2)
- 2-Methoxythiophen-3-amine (CAS 1287217-56-4)
- 8-Aminoisoquinolin-1-ol (CAS 216097-69-7)
- 4-((3-Aminophenyl)amino)cyclohexan-1-ol (CAS 1094352-55-2)
- D-Ala18-Tirzepatide (CAS CATO-CPTD788916)
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