5,7-Dichloro-6-methyl-1,3-benzoxazole-2-thiol CAS 199293-12-4
| CAS No. | 199293-12-4 |
| Molecular Formula | C8H5Cl2NOS |
| Molecular Weight | 234.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5,7-Dichloro-6-methyl-1,3-benzoxazole-2-thiol (C8H5Cl2NOS) contains a nitrogen-containing heterocyclic scaffold, an amide group, sulfur-containing functionality, 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.
5,7-Dichloro-6-methyl-1,3-benzoxazole-2-thiol (CAS 199293-12-4) is a high-purity analytical reference standard with the molecular formula C8H5Cl2NOS and a molecular weight of 234.10 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 | C8H5Cl2NOS |
| Molecular Weight | 234.10 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2013 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
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Recommended Standards
- 5-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)benzene-1,3-diamine (CAS 428820-96-6)
- 5-Methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-amine (CAS 2223012-49-3)
- 4-Hydroxy-2-methylphenylboronic Acid Pinacol Ester (CAS 946427-03-8)
- N-Methyl-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-3-amine (CAS 948593-73-5)
- N'-((5-(Dimethylamino)furan-2-yl)methylene)acetohydrazide (CAS 444674-29-7)
- N-(3-(4-amino-3-methylphenoxy)phenyl)acetamide (CAS 946742-90-1)
- Ethyl 2,2-bis(4-fluorobenzyl)-3-oxobutanoate (CAS 865657-94-9)
- 1-Tosyl-6-oxa-1-azaspiro[2.5]Octane (CAS 1207754-85-5)
- Dicyclohexylamine (S)-2-((tert-butoxycarbonyl)amino)-3-(3,4-difluorophenyl)propanoate (CAS 198474-91-8)
- 3-Iodo-5-nitrophenol (CAS 861338-13-8)
- 2-Amino-4-methoxy-3-nitropyridine (CAS 84487-08-1)
- 1,1-Dioxo-1lambda6-thiomorpholine-4-sulfonyl chloride (CAS 1154974-57-8)
- (6-Fluoro-1-methyl-1,3-benzodiazol-5-yl)boronic acid (CAS 2377607-53-7)
- Semaglutide Impurity 176 (CAS CATO-C4X-2226176)
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