3-(Carboxymethyl)-1,2,3-oxadiazol-3-ium-5-olate CAS 26537-53-1
| CAS No. | 26537-53-1 |
| Molecular Formula | C4H4N2O4 |
| Molecular Weight | 144.09 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-(Carboxymethyl)-1,2,3-oxadiazol-3-ium-5-olate (CAS 26537-53-1) is a high-purity analytical reference standard with the molecular formula C4H4N2O4 and a molecular weight of 144.09 g/mol.
Structurally, 3-(Carboxymethyl)-1,2,3-oxadiazol-3-ium-5-olate (C4H4N2O4) contains a carbohydrate-derived structure, an amide group. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 144.09 g/mol, it falls into the low-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.
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.
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 | C4H4N2O4 |
| Molecular Weight | 144.09 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.) | 1964 |
| Nitrogen Atoms | 2 |
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Recommended Standards
- 2-(4-Oxo-4,5-dihydro-1,2,5-oxadiazol-3-yl)acetic acid (CAS 3201-54-5)
- 3-(Trifluoromethoxy)propan-1-ol (CAS 949009-61-4)
- 2-(2,2,2-Trifluoroethoxy)ethanol (CAS 2358-54-5)
- 3,5-Dioxo-1,2,4-triazolidine-1-carboxamide (CAS 88947-34-6)
- N-Methyl-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-3-amine (CAS 948593-73-5)
- n-(Cyclopropylmethyl)-n-methylformamide (CAS 1481768-45-9)
- 1-Keto-3-methylcholanthrene (CAS 3343-07-5)
- 4-Cyclopropoxy-5-isopropoxypicolinic acid (CAS 1243447-15-5)
- Ethyl 4,6-dimethoxy-3-methyl-1H-indole-2-carboxylate (CAS 1134334-78-3)
- 3-[[[3,5-Bis(trifluoromethyl)phenyl]methyl]amino]-4-[[(8α,9S)-6'-methoxycinchonan-9-yl]amino]-3-cyclobutene-1,2-dione (CAS 1210360-60-3)
- cis-4-(3-methylbenzoyl)cyclohexane-1-carboxylic acid (CAS 735269-90-6)
- (s)-2-Amino-2-(6-methoxybenzo[d][1,3]dioxol-5-yl)ethan-1-ol (CAS 1213626-68-6)
- Flurbiprofen Impurity 152 (CAS CATO-C4X-1444152)
- Neuropeptide Y (2-36) (human, rat) trifluoroacetate salt (CAS 123139-39-9)
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