4-(4-Chlorophenyl)oxazole-2-thiol CAS 49656-28-2
| CAS No. | 49656-28-2 |
| Molecular Formula | C9H6ClNOS |
| Molecular Weight | 211.67 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 4-(4-Chlorophenyl)oxazole-2-thiol 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.
4-(4-Chlorophenyl)oxazole-2-thiol (CAS 49656-28-2), molecular formula C9H6ClNOS and molecular weight 211.67 g/mol, is a CATO reference standard with documented purity and traceability.
4-(4-Chlorophenyl)oxazole-2-thiol (C9H6ClNOS) 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. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
Physical & Chemical Properties
| Molecular Formula | C9H6ClNOS |
| Molecular Weight | 211.67 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1971 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Chlorophenyl Standards
- 4-(3-Chlorophenyl)-2,3-dihydro-1,3-thiazol-2-one (CAS 1095051-68-5)
- 3-(3-Chlorophenyl)-1,2,4-thiadiazol-5-amine (CAS 1153977-31-1)
- 5-(3-Chlorophenyl)-4H-1,2,4-triazole-3-thiol (CAS 117320-61-3)
- 4-(2-Chlorophenyl)-1,2,3-thiadiazol-5-amine (CAS 1538121-87-7)
- 4-(3-Chlorophenyl)-1,2,3-thiadiazol-5-amine (CAS 1539779-80-0)
- 2-(4-Chlorophenyl)-4(5H)-thiazolone (CAS 1706527-37-8)
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Recommended Standards
- 4-(4-Chlorophenyl)-1,3-thiazol-2-ol (CAS 2103-98-2)
- 4-(5-Chlorothiophen-2-yl)pyrimidin-2(1H)-imine (CAS 855308-65-5)
- 4-(4-Chlorophenyl)-1,2,3-thiadiazol-5-amine (CAS 388088-77-5)
- 4-(6-Chloropyridin-3-yl)thiazol-2-amine (CAS 885279-42-5)
- H-Leu-Tyr-Leu-OH (H-3990.0250) (CAS 34337-48-9)
- 2,2,4-Trimethyl-1,2-dihydroquinoline (CAS 147-47-7)
- Dibenzyl 1-(4-(methoxycarbonyl)phenyl)-2-methylhydrazine-1,2-dicarboxylate (CAS 1415560-10-9)
- methyl 1H-imidazo[4,5-c]pyridine-4-carboxylate (CAS 1234616-18-2)
- 1-(4-hydroxy-2-pyridyl)ethanone (CAS 1196157-53-5)
- Bicyclo[4.2.0]octa-1,3,5-triene-3-carboxamide (CAS 825-73-0)
- (3R,4R)-tert-butyl 3-(dimethylamino)-4-hydroxypyrrolidine-1-carboxylate (CAS 960289-56-9)
- 2-(Trifluoromethyl)-6,7-dihydropyrazolo[1,5-a]pyrazin-4(5H)-one (CAS 1196153-16-8)
- 3-(Piperidin-4-yloxy)propan-1-amine (CAS 1489328-85-9)
- D-Pro38-Tirzepatide (CAS CATO-CPTD788901)
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