(4R,5S)-Methyl 5-isopropyl-4,5-dihydrooxazole-4-carboxylate CAS 339034-76-3
| CAS No. | 339034-76-3 |
| Molecular Formula | C8H13NO3 |
| Molecular Weight | 171.19 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.
CATO supplies (4R,5S)-Methyl 5-isopropyl-4,5-dihydrooxazole-4-carboxylate (CAS 339034-76-3), a certified reference material (molecular formula C8H13NO3, MW 171.19 g/mol) for analytical method development and quality control.
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, (4R,5S)-Methyl 5-isopropyl-4,5-dihydrooxazole-4-carboxylate is typically white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 171.19 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).
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 | C8H13NO3 |
| Molecular Weight | 171.19 g/mol |
| Appearance | 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 1 |
Recommended Standards
- (4R,5S)-Ethyl 5-ethyl-4,5-dihydrooxazole-4-carboxylate (CAS 62772-38-7)
- (E)-Ethyl 3-acetamidobut-2-enoate (CAS 23652-67-7)
- (4R,5S)-5-Acetyl-4-isopropyloxazolidin-2-one (CAS 306776-28-3)
- (N-Acetyl)-(4S)-isopropyl-2-oxazolidinone (CAS 77887-48-0)
- Sodium 2,5-dichlorothiophene-3-sulfinate (CAS 363179-59-3)
- 2-Bromo-3,4-difluorobenzyl alcohol (CAS 1578156-19-0)
- methyl 5-fluoropiperidine-3-carboxylate (CAS 1241725-62-1)
- 2'-iso-Propyl-2,2,2-trifluoroacetophenone (CAS 845823-14-5)
- 4-(Methoxycarbonyl)thiazole-5-carboxylic acid (CAS 1427081-30-8)
- 2-Methyl-3-oxo-N-[3-(trifluoromethyl)benzoyl]-3,4-dihydro-2H-1,4-benzoxazine-2-carbohydrazide (CAS 861207-04-7)
- Ethyl 1-(pyridin-3-yl)-1H-pyrazole-4-carboxylate (CAS 741717-60-2)
- 5-Oxa-2-azaspiro[3.4]Octan-8-one hydrochloride (CAS 2306268-73-3)
- 3034-55-7 5-BROMO-1,3-THIAZOLE 5-BROMOTHIAZOLE 5-BROMTHIAZOLE BC002225 THIAZOLE,5-BROMO- (CAS 3034-55-7)
- Semaglutide Impurity 187 (CAS CATO-C4X-2226187)
Why CATO?
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