5-Nitroisoxazole-3-carboxylic acid CAS 1368191-38-1
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 1368191-38-1 |
| Molecular Formula | C4H2N2O5 |
| Molecular Weight | 158.07 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-Nitroisoxazole-3-carboxylic acid (CAS 1368191-38-1) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C4H2N2O5. Molecular weight: 158.07 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C4H2N2O5 |
| Molecular Weight | 158.07 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.) | 1991 |
| Nitrogen Atoms | 2 |
Related Nitroisoxazole Standards
- 3-Nitroisoxazole-5-carboxamide (CAS 1224594-00-6)
- 3-Methyl-4-nitroisoxazole-5-carbaldehyde (CAS 6436-64-2)
- Methyl 5-nitroisoxazole-3-carboxylate (CAS 1367269-14-4)
- 3-Methyl-4-nitroisoxazole-5-carboxylic acid (CAS 89282-13-3)
- 5-Methyl-4-nitroisoxazole-3-carboxylic Acid (CAS 960225-75-6)
- Methyl 3-nitroisoxazole-5-carboxylate (CAS 40995-06-0)
- Ethyl 3-nitroisoxazole-5-carboxylate (CAS 1224593-92-3)
- Ethyl 5-nitroisoxazole-3-carboxylate (CAS 155088-43-0)
Recommended Standards
- Octylboronic Acid (CAS 28741-08-4)
- 5-Nitro-1H-1,2,3-triazole-4-carboxylicacid (CAS 145769-54-6)
- 2,2,3,3-Tetrafluorocyclopropanecarboxylic acid (CAS 344324-87-4)
- 5-Chloromethyl-1H-indazole (CAS 944904-22-7)
- 6-Bromo-2,2-dimethyl-1H-pyrrolo[2,3-b]pyridin-3(2H)-one (CAS 2699704-09-9)
- (2-(6-Hydroxypyridin-2-yl)phenyl)(pyrrolidin-3-yl)methanone (CAS 1261896-28-9)
- 4-Iodo-1-tritylpyrazole (CAS 191980-54-8)
- 1-Amino-3-(naphthalen-2-yloxy)-propan-2-ol hydrochloride hydrate (CAS 1452488-11-7)
- Ethyl 7-amino-2-(trifluoromethyl)-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxylate (CAS 704877-28-1)
- Polymyxin B nonapeptide TFA (CAS 2220175-42-6)
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