2-Chloro-4-methyloxazole-5-carbonitrile CAS 1823934-82-2
| CAS No. | 1823934-82-2 |
| Molecular Formula | C5H3ClN2O |
| Molecular Weight | 142.54 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-Chloro-4-methyloxazole-5-carbonitrile (C5H3ClN2O) contains an amide group, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
2-Chloro-4-methyloxazole-5-carbonitrile (CAS 1823934-82-2) is a high-purity analytical reference standard with the molecular formula C5H3ClN2O and a molecular weight of 142.54 g/mol.
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 | C5H3ClN2O |
| Molecular Weight | 142.54 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1995 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
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Recommended Standards
- 3-Chloropyridazine-4-carbaldehyde (CAS 1797131-37-3)
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- 2-Chloropyrimidine-4-carbaldehyde (CAS 944901-22-8)
- 6-(4-Butoxyphenyl)pyridazin-3(2H)-one (CAS 58897-53-3)
- N'-(4-Isopropylbenzylidene)-3-methyl-1-phenyl-1H-thieno[2,3-c]pyrazole-5-carbohydrazide (CAS 402839-74-1)
- 2-Bromo-5-((2-methylpiperidin-1-yl)sulfonyl)benzoic acid (CAS 37088-32-7)
- Ethyl (4-(2-((4-chlorophenyl)amino)-2-oxoethyl)thiazol-2-yl)carbamate (CAS 946314-33-6)
- 1,1,1-Trifluoro-4-((4-methoxyphenyl)amino)pent-3-en-2-one (CAS 201659-55-4)
- 3-(4-Hydroxyphenyl)propyl Acetate (CAS 80373-18-8)
- 6-Hydroxynaphthalene-2-boronic Acid (CAS 173194-95-1)
- N-(1-benzylpiperidin-4-yl)-3-fluorobenzamide (CAS 945119-01-7)
- 35944-64-0 Benzenamine, 3-iodo-4-methyl- (9CI) 3-Iodo-p-toluidine p-Toluidine, 3-iodo- 2-12-00-00533 (Beilstein Handbook Reference) BRN 2353567 EINECS 252-803-2 (CAS 35944-64-0)
- Tirzepatide Impurity 36 (CAS CATO-C4X-324036)
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