(5-Chlorothiazol-2-yl)methanol CAS 50398-78-2
| CAS No. | 50398-78-2 |
| Molecular Formula | C4H4ClNOS |
| Molecular Weight | 149.60 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 149.60 g/mol gives (5-Chlorothiazol-2-yl)methanol distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
(5-Chlorothiazol-2-yl)methanol (CAS 50398-78-2) is a high-purity analytical reference standard with the molecular formula C4H4ClNOS and a molecular weight of 149.60 g/mol.
Owing to an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution, (5-Chlorothiazol-2-yl)methanol is typically white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 149.60 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C4H4ClNOS |
| Molecular Weight | 149.60 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1971 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Chlorothiazol Standards
- (4-Chlorothiazol-5-yl)methanol (CAS 1025936-09-7)
- (2-Chlorothiazol-5-yl)methanol (CAS 145015-15-2)
- (5-Chlorothiazol-4-yl)methanol (CAS 1934835-38-7)
- (2-Chlorothiazol-4-yl)methanol (CAS 5198-85-6)
- (5-Chlorothiazol-2-yl)methanamine (CAS 1187933-28-3)
- (2-chlorothiazol-5-yl)methanamine (CAS 120740-08-1)
- (2-Chlorothiazol-4-yl)methanamine (CAS 139425-75-5)
- 2-(4-Chlorothiazol-2-yl)acetonitrile (CAS 1433708-74-7)
Recommended Standards
- 4-Chloro-2-methylisothiazol-3(2H)-one (CAS 71091-90-2)
- (5-Chloro-1,3,4-thiadiazol-2-yl)methanamine (CAS 1935236-26-2)
- 4-Chloro-3-methoxyisothiazole (CAS 78383-41-2)
- 5-(Chloromethyl)-1,3,4-thiadiazol-2-amine (CAS 62774-00-9)
- 2-(3-Bromophenyl)-2,2-difluoroacetonitrile (CAS 1334149-24-4)
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