4-Oxo-4,5-dihydro-1,2,5-oxadiazole-3-carboxylic acid CAS 66313-36-8
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 66313-36-8 |
| Molecular Formula | C3H2N2O4 |
| Molecular Weight | 130.06 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Oxo-4,5-dihydro-1,2,5-oxadiazole-3-carboxylic acid (CAS 66313-36-8) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C3H2N2O4. Molecular weight: 130.06 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C3H2N2O4 |
| Molecular Weight | 130.06 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1975 |
| Nitrogen Atoms | 2 |
Related Oxo Standards
- 5-Oxo-2,5-dihydro-1,2,4-oxadiazole-3-carboxylic acid (CAS 1257265-24-9)
- 5,6-Dihydro-1,4-dioxine-2-carboxylic acid (CAS 61564-98-5)
- 5-Oxo-2,5-dihydro-1H-pyrazole-3-carboxylic Acid (CAS 37832-55-6)
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Recommended Standards
- 4-Nitro-1,2,5-oxadiazol-3-amine (CAS 66328-69-6)
- 5-Nitro-1,3,4-oxadiazol-2-amine (CAS 728948-45-6)
- 4-Carboxy-1,2,5-oxadiazole 2-oxide (CAS 153309-86-5)
- 3-(4-(3-((tert-Butyldiphenylsilyl)oxy)propyl)phenyl)-4-nitropyridine (CAS 2267291-19-8)
- 4-(Benzo[d]oxazol-2-yl)-N-methylaniline (CAS 88741-37-1)
- Chloralhydrate (CAS 302-17-0)
- 1H-Pyrazolo[4,3-d]pyrimidine, 7-chloro-3-iodo-1-methyl- (CAS 2385055-50-3)
- tert-Butyl 2-methylpiperazine-1-carboxylate (CAS 120737-78-2)
- (6-Chloro-2-methoxypyrimidin-4-yl)methanol (CAS 2072804-89-6)
- Tau Peptide (337-368) (Repeat 4 Domain) trifluoroacetate salt (CAS 330456-27-4)
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