4-Amino-1,2,5-oxadiazole-3-carboxylic Acid CAS 78350-50-2
| CAS No. | 78350-50-2 |
| Molecular Formula | C3H3N3O3 |
| Molecular Weight | 129.07 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
4-Amino-1,2,5-oxadiazole-3-carboxylic Acid (CAS 78350-50-2), molecular formula C3H3N3O3 and molecular weight 129.07 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, 4-Amino-1,2,5-oxadiazole-3-carboxylic Acid is typically off-white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 129.07 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), 4-Amino-1,2,5-oxadiazole-3-carboxylic Acid 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 | C3H3N3O3 |
| Molecular Weight | 129.07 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.) | 1979 |
| Nitrogen Atoms | 3 |
Related Amino Standards
- 5-Amino-1,3,4-oxadiazole-2-carboxylic acid (CAS 4970-61-0)
- (R)-3-Amino-1,1,1-trifluoropropan-2-ol (CAS 1217730-60-3)
- (S)-3-Amino-1,1,1-trifluoropropan-2-ol (CAS 160706-71-8)
- 2-Amino-3,3,3-trifluoro-1-propanol (CAS 162684-85-7)
- (R)-2-Amino-3,3,3-trifluoro-1-propanol (CAS 174075-83-3)
- (2S)-2-Amino-3,3,3-trifluoro-1-propanol (CAS 561323-79-3)
- 3-Amino-1,1,1-trifluoro-2-propanol (CAS 431-38-9)
- 4-Amino-5-fluoropyrimidin-2-ol (CAS 117969-88-7)
Recommended Standards
- 2-oxo-2,3-dihydro-1,3-oxazole-4-carboxylic acid (CAS 406183-40-2)
- 4-Nitroisoxazol-5-amine (CAS 861543-32-0)
- 3-Oxo-2,3-dihydroisoxazole-4-carboxylic acid (CAS 178316-78-4)
- 4-Hydroxyisoxazole-3-carboxylic Acid (CAS 178316-77-3)
- 3-(Dimethylamino)pyrazine-2-sulfonyl chloride (CAS 2819971-25-8)
- 4-(2-Ethyl-1h-imidazol-1-yl)-3-fluoroaniline (CAS 937597-67-6)
- 2-Isopropyl-6-nitroaniline (CAS 79858-67-6)
- Methyl 6-acetylpyridine-3-carboxylate (CAS 153559-93-4)
- tert-Butyl 8-oxa-2,5-diazaspiro[3.5]nonane-2-carboxylate (CAS 1251002-01-3)
- 1H-Pyrazolo[3,4-d]pyrimidin-3(2H)-one (CAS 90993-87-6)
- 3-(2-Methyl-1h-imidazol-1-yl)propanoic acid (CAS 24647-62-9)
- 4-Phenylquinazolin-2(1H)-one (CAS 23441-75-0)
- 5-Amino-2-(1H-pyrazol-1-yl)benzamide (CAS 1158414-84-6)
- Semaglutide impurity 69 (CAS CATO-C4X-222669)
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