3-Cyclopropylisoxazole-5-carboxylic acid CAS 870704-25-9
| CAS No. | 870704-25-9 |
| Molecular Formula | C7H7NO3 |
| Molecular Weight | 153.14 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.
3-Cyclopropylisoxazole-5-carboxylic acid (CAS 870704-25-9) is a high-purity analytical reference standard with the molecular formula C7H7NO3 and a molecular weight of 153.14 g/mol.
Based on its molecular formula C7H7NO3, 3-Cyclopropylisoxazole-5-carboxylic acid contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 153.14 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
CATO manufactures 3-Cyclopropylisoxazole-5-carboxylic acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C7H7NO3 |
| Molecular Weight | 153.14 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 |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 1 |
Related Cyclopropylisoxazole Standards
- 5-Cyclopropylisoxazole-4-carboxylic Acid (CAS 124845-04-1)
- 4-Cyclopropylisoxazole-3-carboxylic acid (CAS 1781638-72-9)
- 5-cyclopropylisoxazole-3-carboxylic acid (CAS 110256-15-0)
- Methyl 5-Cyclopropylisoxazole-3-carboxylate (CAS 887360-91-0)
- Methyl 5-cyclopropylisoxazole-4-carboxylate (CAS 887360-91-1)
- 5-Cyclopropylisoxazole-3-carbohydrazide (CAS 21080-82-0)
- 3-Cyclopropylisoxazole-5-carbaldehyde (CAS 121604-59-9)
- 5-Cyclopropylisoxazole-3-carbaldehyde (CAS 1430463-82-3)
Recommended Standards
- 3-Cyclopropyl-5-nitro-1H-pyrazole (CAS 326827-23-0)
- 3-hydrazinylpyridine-4-carboxylic acid (CAS 339364-15-7)
- 3-Cyclopropyl-1,2-oxazole-4-carboxylic acid (CAS 639523-17-4)
- 3-Hydroxy-2-methoxyisonicotinaldehyde (CAS 874619-98-4)
- 3,3-Difluoro-1-(4-methoxyphenyl)-4-phenylazetidin-2-one (CAS 171251-50-6)
- 5-tert-Butyl-4-morpholin-4-ylmethyl-furan-2-carboxylic acid hydrochloride (CAS 1052420-48-0)
- Phenol, 4,4'-(1-methylethylidene)bis-, polymer with 1,1'-sulfonylbis[4-chlorobenzene], (3-chloropropyl)trimethoxysilane-terminated (CAS 71077-10-6)
- 1-(4-Acetyl-1,4-diazepan-1-yl)-2-aminoethanone (CAS 1250695-52-3)
- 5-{2-[5-chloro-1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl]vinyl}-3-[4-(trifluoromethyl)phenyl]-1,2,4-oxadiazole (CAS 648859-77-2)
- 5-(2-Ethoxyphenyl)-3-hydrazono-2,3-dihydro-1H-1,2,4-triazole (CAS 299440-08-7)
- 3-(2-((4-Chlorobenzyl)oxy)phenyl)-1-((2,5-dichlorophenyl)sulfonyl)-1H-pyrazole (CAS 477713-43-2)
- 1-(2-Fluorophenyl)-6-isopropyl-1h-pyrazolo[3,4-b]pyridine-4-carboxylic acid (CAS 1018127-29-1)
- 2-Ethyl-2-methylbutan-1-ol (CAS 18371-13-6)
- CBP501 Affinity Peptide trifluoroacetate salt (CAS 1351804-17-5)
Why CATO?
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