4-Carboxy-1,2,5-oxadiazole 2-oxide CAS 153309-86-5
| CAS No. | 153309-86-5 |
| Molecular Formula | C3H2N2O4 |
| Molecular Weight | 130.06 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 4-Carboxy-1,2,5-oxadiazole 2-oxide 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.
4-Carboxy-1,2,5-oxadiazole 2-oxide (CAS 153309-86-5), molecular formula C3H2N2O4 and molecular weight 130.06 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amino-acid-derived structure, an amide group, an ether linkage, 4-Carboxy-1,2,5-oxadiazole 2-oxide is typically off-white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 130.06 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.
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.
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.) | 2000 |
| Nitrogen Atoms | 2 |
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Recommended Standards
- 4-Nitroisoxazol-5(2H)-one (CAS 145440-80-8)
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