5-Iodo-isoxazole-3-carboxylic acid ethyl ester CAS 149286-19-1
| CAS No. | 149286-19-1 |
| Molecular Formula | C6H6INO3 |
| Molecular Weight | 267.02 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 5-Iodo-isoxazole-3-carboxylic acid ethyl ester.
5-Iodo-isoxazole-3-carboxylic acid ethyl ester (CAS 149286-19-1), molecular formula C6H6INO3 and molecular weight 267.02 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 5-Iodo-isoxazole-3-carboxylic acid ethyl ester (C6H6INO3) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, iodine substitution, an aromatic ring system. 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 267.02 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.
As a certified reference material (CRM), 5-Iodo-isoxazole-3-carboxylic acid ethyl ester 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 | C6H6INO3 |
| Molecular Weight | 267.02 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1999 |
| Halogen Content | I-containing |
| Nitrogen Atoms | 1 |
Related Iodo Standards
- 1-ethyl-4-iodo-5-nitro-1h-pyraZole (CAS 1354705-16-0)
- 4-Iodo-1,5-dimethyl-3-nitro-1H-pyrazole (CAS 1354705-66-0)
- 1-Ethyl-4-iodo-3-nitro-1H-pyrazole (CAS 1798678-48-4)
- Methyl 2-iodo-4-methyloxazole-5-carboxylate (CAS 1823953-03-2)
- 4-Iodo-oxazole-5-carboxylic acid ethyl ester (CAS 220580-92-7)
- 5-Iodo-1,3-dimethyl-4-nitro-1H-pyrazole (CAS 85779-99-3)
- Ethyl 5-iodo-4H-1,2,4-triazole-3-carboxylate (CAS 774608-90-1)
- Methyl 2-(4-iodo-1H-1,2,3-triazol-1-yl)acetate (CAS 2138074-18-5)
Recommended Standards
- 2-(3-Amino-4-iodo-1H-pyrazol-1-yl)acetic acid (CAS 1354705-75-1)
- 5-Bromo-2,3-difluoro-4-methoxybenzoic acid (CAS 1780570-14-0)
- 3-Bromo-5,6-difluoro-2-methoxybenzoic acid (CAS 1784368-01-9)
- 4-Bromo-3-difluoromethoxybenzoic acid (CAS 1352719-48-2)
- N-((5-Bromopyridin-3-yl)methyl)methanesulfonamide (CAS 173999-05-8)
- 2-(((1-(tert-Butoxycarbonyl)pyrrolidin-3-yl)methyl)(cyclopropyl)amino)acetic acid (CAS 1353982-46-3)
- Toluene-4-sulfonic acid tetrahydro-furan-3-ylmethyl ester (CAS 15833-63-3)
- Ethyl 4-chloro-6-methylpyrazolo[1,5-a]pyrazine-2-carboxylate, 97% (CAS 1449598-75-7)
- 5-(2,5-Dimethoxyphenyl)-3-hydroxy-4-(4-isopropoxy-2-methylbenzoyl)-1-(pyridin-3-ylmethyl)-1H-pyrrol-2(5H)-one (CAS 385385-72-8)
- Tert-butyl (S)-(2-(piperidin-3-yl)ethyl)carbamate (CAS 1217625-83-6)
- N1,N1-diethyl-N2-(pyridin-4-ylmethyl)ethane-1,2-diamine (CAS 104293-70-1)
- L-Thyroxine sodium (CAS 55-03-8)
- (+/-)-tert-butyl 2-isopropyl-4-oxoazetidine-1-carboxylate (CAS 1335042-42-6)
- Tirzepatide Impurity 12 (CAS CATO-C4X-324012)
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