5-[(ethylsulfanyl)methyl]-1,2-oxazole-3-carboxylic acid CAS 893640-81-8
| CAS No. | 893640-81-8 |
| Molecular Formula | C7H9NO3S |
| Molecular Weight | 187.22 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.
5-[(ethylsulfanyl)methyl]-1,2-oxazole-3-carboxylic acid (CAS 893640-81-8), molecular formula C7H9NO3S and molecular weight 187.22 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, 5-[(ethylsulfanyl)methyl]-1,2-oxazole-3-carboxylic acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 187.22 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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 5-[(ethylsulfanyl)methyl]-1,2-oxazole-3-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 | C7H9NO3S |
| Molecular Weight | 187.22 g/mol |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related ethylsulfanyl Standards
- 5-(Ethylsulfanyl)thiophene-2-carboxylic acid (CAS 101861-40-9)
- 4-(Ethylsulfanyl)-2-hydrazinyl-6-methylpyrimidine (CAS 89852-75-5)
- 3-(Ethylsulfanyl)pyrazine-2-carboxylic acid (CAS 74002-58-7)
- 2-(Ethylsulfanyl)pyridine-4-carboxylic acid (CAS 1019485-25-6)
- 3-(Ethylsulfanyl)pyridine-4-carboxylic acid (CAS 1192021-94-5)
- 6-(Ethylsulfanyl)pyridine-3-carboxylic acid (CAS 887578-22-5)
- 1-[4-(ethylsulfanyl)phenyl]ethan-1-amine (CAS 897552-35-1)
- 4-(ethylsulfanyl)-1,2,3,4-tetrahydroquinoline (CAS 197142-19-1)
Recommended Standards
- 5-(Ethylthio)-1-methyl-4-nitro-1H-imidazole (CAS 87695-77-0)
- 5-Amino-2-butyryl-1,2,4-thiadiazol-3(2H)-one (CAS 220966-99-4)
- 4-Methylsulfonyl-2-aminophenol (CAS 98-30-6)
- 5-Amino-2-isobutyryl-1,2,4-thiadiazol-3(2H)-one (CAS 220967-00-0)
- 2-Cyano-6-hydroxy-N-methylbenzamide (CAS 1243379-98-7)
- Tert-butyl N-(5-bromopentyl)-N-methylcarbamate (CAS 1694011-13-6)
- 3-(4-Chlorophenyl)-6-(2-fluorobenzyl)-3,6-dihydro-7H-[1,2,3]triazolo[4,5-d]pyrimidin-7-one (CAS 893914-27-7)
- 5-Methyl-4-phenyl-4H-1,2,4-triazole-3-carbaldehyde (CAS 83503-28-0)
- Phthalimide Potassium Salt (CAS 1074-82-4)
- 7-Oxo-7H-benzimidazo[2,1-α]benz[de]isoquinoline-3-carboxylic Acid (CAS 52029-86-4)
- Arteminin (CAS 466639-11-2)
- ethyl 5-[(acetyloxy)methyl]-4-ethyl-3-methyl-1H-pyrrole-2-carboxylate (CAS 100619-73-6)
- 5-Bromo-1-(4-methoxyphenyl)pyridin-2(1h)-one (CAS 914918-82-4)
- Peptide 439 (CAS CATO-CPTD788439)
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