3-Methylisoxazole-5-carbaldehyde CAS 70753-36-5
| CAS No. | 70753-36-5 |
| Molecular Formula | C5H5NO2 |
| Molecular Weight | 111.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 3-Methylisoxazole-5-carbaldehyde.
CATO supplies 3-Methylisoxazole-5-carbaldehyde (CAS 70753-36-5), a certified reference material (molecular formula C5H5NO2, MW 111.10 g/mol) for analytical method development and quality control.
3-Methylisoxazole-5-carbaldehyde (C5H5NO2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
As a certified reference material (CRM), 3-Methylisoxazole-5-carbaldehyde meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C5H5NO2 |
| Molecular Weight | 111.10 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1977 |
| Nitrogen Atoms | 1 |
Related Methylisoxazole Standards
- 3-Methylisoxazole-4,5-diamine (CAS 524729-49-5)
- 5-Methylisoxazole-3-carbonitrile (CAS 57351-99-2)
- 5-Methylisoxazole-4-carbonitrile (CAS 260555-29-1)
- 5-Methylisoxazole-3-carboxaldehyde 5-methylisoxazole-3-carbaldehyde 62254-74-4 A8603 (CAS 62254-74-4)
- 5-Methylisoxazole-4-acetonitrile (CAS 1824462-79-4)
- 5-Methylisoxazole-4-carboxamide (CAS 1097817-28-1)
- N-Methylisoxazole-5-carboxamide (CAS 116235-70-2)
- 3-Methylisoxazole-4-carboxamide (CAS 1314959-75-5)
Recommended Standards
- 3-Methyl-1H-1,2,4-triazole-5-carbaldehyde (CAS 56804-98-9)
- 4,5-Dioxopentanenitrile (CAS 876501-78-9)
- 3-Furaldoxime (CAS 35940-93-3)
- 4-Aminofuran-2-carbaldehyde (CAS 57500-48-8)
- Cyclopentyl(6-methylpyridin-2-yl)methanamine (CAS 1337625-07-6)
- 2-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)quinoxaline (CAS 2077892-18-1)
- Methyl 2-amino-5-chloro-3-iodobenzoate (CAS 289039-84-5)
- 1-(3,5-Di(pyridin-2-yl)-4H-1,2,4-triazol-4-yl)-3-(4-(trifluoromethoxy)phenyl)urea (CAS 320418-37-9)
- 7-Bromo-4-(2-(cyclohex-1-en-1-yl)ethyl)-4,5-dihydrobenzo[f][1,4]oxazepin-3(2H)-one (CAS 1326898-15-0)
- N'-[(1E)-[2-(Pyrrolidin-1-yl)-1,3-thiazol-5-yl]methylidene]furan-2-carbohydrazide (CAS 400081-36-9)
- Betamethasone impurity 44 (CAS CATO-C4X-143744)
- 1-(2-Bromo-1-butoxyethyl)-4-methoxybenzene (CAS 1250020-80-4)
- (R)-2-Amino-2-(1H-1,2,3,4-tetrazol-5-yl)acetic acid (CAS 847480-01-7)
- Insulin Degludec Impurity 12 (CAS CATO-C4X-215712)
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