1,2,5-Oxadiazole-3,4-dicarboxamide CAS 56873-33-7
| CAS No. | 56873-33-7 |
| Molecular Formula | C4H4N4O3 |
| Molecular Weight | 156.10 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.
1,2,5-Oxadiazole-3,4-dicarboxamide (CAS 56873-33-7) is a high-purity analytical reference standard with the molecular formula C4H4N4O3 and a molecular weight of 156.10 g/mol.
Structurally, 1,2,5-Oxadiazole-3,4-dicarboxamide (C4H4N4O3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 156.10 g/mol, it falls into the medium-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C4H4N4O3 |
| Molecular Weight | 156.10 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| 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) | 5.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1973 |
| Nitrogen Atoms | 4 |
Related Oxadiazole Standards
- 5-Propyl-1,3,4-oxadiazole-2-carboxamide (CAS 99367-46-1)
- 1,2,4-Oxadiazole-3,5-dicarboxylic acid (CAS 371214-75-4)
- 1,1'-(1,3,4-Oxadiazole-2,5-diyl)diethanone (CAS 215666-58-3)
- 5-methyl-1,2,4-oxadiazole-3-carbonyl azide (CAS 1423029-02-0)
- 2-Benzyl-1,3,4-oxadiazole (CAS 13148-63-5)
- 5-methyl-1,3,4-oxadiazole-2-carbonyl chloride (CAS 889131-28-6)
- 1,2,5-oxadiazole-3,4-dicarboxylic acid (CAS 48113-77-5)
- 1,3,4-Oxadiazole-2-sulfonamide (CAS 90774-48-4)
Recommended Standards
- 1,1,1-Trifluoropropan-2-yl acetate (CAS 400-37-3)
- 1,3,5-Triazine-2,4,6-tricarbonitrile (CAS 7615-57-8)
- 1-(5-Nitroisoxazol-3-yl)ethanone (CAS 340014-77-9)
- 1-Ethynyl-2,3,4-trifluorobenzene (CAS 819861-96-6)
- 6-Chloro-2-{naphtho[2,1-b]furan-2-yl}imidazo[1,2-a]pyridine (CAS 866131-71-7)
- Fmoc-N-Me-Phe-OH (CAS 77128-73-5)
- 3-(7-(4-Chlorophenyl)-4-oxo-4H,8H-[1,2,4]triazino[3,4-b][1,3,4]thiadiazin-3-yl)propanoic acid (CAS 1049030-39-8)
- Moxifloxacin Impurity 64 (CAS 18184-75-3)
- 4-(Pyrrolidin-1-yl)butan-2-amine (CAS 138548-04-6)
- XantPhos Pd G3 (CAS 1445085-97-1)
- 1-Methylbenzimidazole-2-carboxamide (CAS 5805-75-4)
- Montelukast Impurity 40 (CAS CATO-C4X-103140)
- 1-(4-Bromo-3-methylphenyl)pyrrolidin-2-one (CAS 197450-39-8)
- Peptide YY (13-36) (canine, mouse, porcine, rat) (CAS 86895-09-2)
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