(4S,5S)-4-Carbamoyl-4,5-dihydrooxazole-5-carboxylic acid CAS 70671-34-0
| CAS No. | 70671-34-0 |
| Molecular Formula | C5H6N2O4 |
| Molecular Weight | 158.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of (4S,5S)-4-Carbamoyl-4,5-dihydrooxazole-5-carboxylic acid is closely related to a carbohydrate-derived structure, an amide group in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
(4S,5S)-4-Carbamoyl-4,5-dihydrooxazole-5-carboxylic acid (CAS 70671-34-0) is a high-purity analytical reference standard with the molecular formula C5H6N2O4 and a molecular weight of 158.11 g/mol.
Owing to a carbohydrate-derived structure, an amide group, (4S,5S)-4-Carbamoyl-4,5-dihydrooxazole-5-carboxylic acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 158.11 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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), (4S,5S)-4-Carbamoyl-4,5-dihydrooxazole-5-carboxylic acid 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 | C5H6N2O4 |
| Molecular Weight | 158.11 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, 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 |
| CAS Registry Year (est.) | 1977 |
| Nitrogen Atoms | 2 |
Recommended Standards
- (2,5-Dioxoimidazolidin-1-yl)acetic Acid (CAS 80258-94-2)
- (R)-2,5-Dioxotetrahydrofuran-3-yl acetate (CAS 79814-40-7)
- (1S,2S)-3-oxocyclobutane-1,2-dicarboxylic acid (CAS 2231664-50-7)
- (R)-2-Amino-2-(3-oxo-2,3-dihydroisoxazol-5-yl)acetic acid (CAS 25690-46-4)
- 3-(2-Bromo-4-chloro-3,5-dimethylphenoxy)-pyrrolidine hydrochloride (CAS 1220018-00-7)
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- 4-Chloro-2-(p-tolyl)quinoline-6-sulfonyl fluoride (CAS 31241-73-3)
- Methyl 5-(fluorosulfonyl)-2-hydroxybenzoate (CAS 400-89-5)
- (2S,3S)-Methyl 2-methyl-3-(3-methylpyridin-2-yl)butanoate (CAS 2767008-08-0)
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- Insulin Degludec Impurity 6 (CAS CATO-C4X-21576)
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