N'-hydroxy-5-methylisoxazole-3-carboximidamide CAS 90585-88-9
| CAS No. | 90585-88-9 |
| Molecular Formula | C5H7N3O2 |
| Molecular Weight | 141.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
N'-hydroxy-5-methylisoxazole-3-carboximidamide (CAS 90585-88-9) is a high-purity analytical reference standard with the molecular formula C5H7N3O2 and a molecular weight of 141.13 g/mol.
Structurally, N'-hydroxy-5-methylisoxazole-3-carboximidamide (C5H7N3O2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. 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 141.13 g/mol, it falls into the low-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C5H7N3O2 |
| Molecular Weight | 141.13 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| 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.) | 1982 |
| Nitrogen Atoms | 3 |
Related N Standards
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Recommended Standards
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- N-Hydroxy-4-methyl-1H-pyrazole-3-carboxamide (CAS 89270-38-2)
- Propyl(2,2,2-trifluoroethyl)amine (CAS 71113-54-7)
- N-(4-amino-2-methoxyphenyl)-2-methylbenzamide (CAS 436089-19-9)
- 5-(2,5-Dichlorothiophen-3-yl)-1-(4-methoxyphenyl)-1H-pyrazole (CAS 318256-33-6)
- 2-(4-methylthiazol-2-yl)propan-2-ol (CAS 124341-73-7)
- 3-Fluoro-6-((trifluoromethyl)thio)pyridazine (CAS 1206524-56-2)
- 4-Chloro-N-(4-methylbenzyl)-2-nitroaniline (CAS 860609-02-5)
- Nefopam Impurity 4 (CAS 24833-47-4)
- 5-(Benzo[d][1,3]dioxol-5-yl)-4-ethyl-4H-1,2,4-triazole-3-thiol (CAS 77803-45-3)
- 6-Cyclopropyl-2,3-dihydropyrazolo[5,1-b]oxazole-7-carboxylic acid (CAS 1935565-64-2)
- 1-Ethyl-3-methyl-1H-pyrazole-5-carbaldehyde (CAS 1138159-72-4)
- Neuropeptide W-23 (rat) (CAS 383415-89-2)
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