Oxazolo[4,5-b]pyridine-2-thiol CAS 211949-57-4
| CAS No. | 211949-57-4 |
| Molecular Formula | C6H4N2OS |
| Molecular Weight | 152.17 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.
Oxazolo[4,5-b]pyridine-2-thiol (CAS 211949-57-4), molecular formula C6H4N2OS and molecular weight 152.17 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C6H4N2OS, Oxazolo[4,5-b]pyridine-2-thiol contains an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 152.17 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 | C6H4N2OS |
| Molecular Weight | 152.17 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | 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.) | 2017 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Oxazolo Standards
- Oxazolo[4,5-c]pyridine-2-thiol (CAS 120640-76-8)
- Oxazolo[5,4-b]pyridine-2(1H)-thione (CAS 169205-99-6)
- Oxazolo[4,5-b]pyridine-2(3H)-thione (CAS 53052-06-5)
- 1H-Oxazolo[3,4-a]pyridine-1,5(3H)-dione (CAS 61327-56-8)
- 2-Methyl[1,3]oxazolo[5,4-d]pyrimidin-7-ol 2-methyloxazolo[5,4-d]pyrimidin-7-ol 27433-55-2 NSC133683 (CAS 27433-55-2)
- Oxazolo[5,4-d]pyrimidine-2-methanamine (CAS 1543085-58-0)
- 3-Methyl-[1,2]oxazolo[5,4-d]pyrimidin-4-amine (CAS 89799-07-5)
- 3-Methyl-[1,2]oxazolo[5,4-b]pyridin-5-amine (CAS 1018144-08-5)
Recommended Standards
- Pyridinium, 2-(methoxycarbonyl)-1-methyl- (CAS 45867-57-0)
- n'-Hydroxy-2-methanesulfonylethanimidamide (CAS 446276-20-6)
- rac-(2R,3R)-2-(4-fluorophenyl)-3-methyloxirane (CAS 885318-83-2)
- Methyl Methanesulfonylacetate (CAS 62020-09-1)
- Ethyl 8-nitroquinoline-2-carboxylate (CAS 148914-32-3)
- 4-(((5-Hydroxy-3-oxo-1,2,3,6-tetrahydro-[1,1'-biphenyl]-4-yl)methylene)amino)-N-(4-methylpyrimidin-2-yl)benzenesulfonamide (CAS 937605-16-8)
- 1-(4-Chloro-2-methoxyphenyl)propan-1-one (CAS 36871-55-3)
- (2s)-2-(3-Oxo-2,3-dihydro-1,2-benzothiazol-2-yl)propanoic acid (CAS 1212358-67-2)
- 4-Amino-3-chloro-5-fluorophenol (CAS 847872-08-6)
- 2-((Tert-butoxycarbonyl)amino)-4,4,4-trifluoro-3,3-dimethylbutanoic acid (CAS 2242426-49-7)
- 3-Methylcyclopentane-1-sulfonamide (CAS 1341961-86-1)
- 2-(1H-indol-3-yl)ethyl acetate (CAS 13137-14-9)
- 2-Chloro-5-isopropoxypyridine (CAS 1204483-99-7)
- Neuropeptide SF (human) (CAS 192387-39-6)
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