Ethyl 4-(hydroxymethyl)-5-methylisoxazole-3-carboxylate CAS 157170-96-2
| CAS No. | 157170-96-2 |
| Molecular Formula | C8H11NO4 |
| Molecular Weight | 185.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Ethyl 4-(hydroxymethyl)-5-methylisoxazole-3-carboxylate (CAS 157170-96-2), a certified reference material (molecular formula C8H11NO4, MW 185.18 g/mol) for analytical method development and quality control.
Structurally, Ethyl 4-(hydroxymethyl)-5-methylisoxazole-3-carboxylate (C8H11NO4) 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 185.18 g/mol, it falls into the medium-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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C8H11NO4 |
| Molecular Weight | 185.18 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 |
| 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 |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2001 |
| Nitrogen Atoms | 1 |
Related Ethyl Standards
- Ethyl 2-(Hydroxymethyl)oxazole-4-acetate (CAS 1215214-71-3)
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- Ethyl 2-[4-(hydroxymethyl)-1H-1,2,3-triazol-1-yl]acetate (CAS 3912-22-9)
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- 2,2-bis(hydroxymethyl)-1-azabicyclo[2.2.2]octan-3-one (CAS 5608-24-2)
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Recommended Standards
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- (6S,8aR)-3-Oxohexahydro-3H-oxazolo[3,4-a]pyridine-6-carboxylic acid (CAS 1620675-53-7)
- 6-[(E)-(Dimethylamino)methylidene]-1,3-dimethyl-furo[2,3-d]pyrimidine-2,4,5(1H,3H,6H)-trione (CAS 453557-63-6)
- 2-Amino-1-(4-bromothiophen-2-yl)ethan-1-ol (CAS 852392-11-1)
- 4,6,7,8-Tetrahydro-5,8-ethanofuro[3,2-c]azepine-2-sulfonyl chloride (CAS 2712741-58-5)
- Methyl 6-chloro-4-hydroxypicolinate (CAS 1256805-03-4)
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