3H-Oxazole-2-thione CAS 32091-51-3
| CAS No. | 32091-51-3 |
| Molecular Formula | C3H3NOS |
| Molecular Weight | 101.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, 3H-Oxazole-2-thione is typically white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 101.13 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO supplies 3H-Oxazole-2-thione (CAS 32091-51-3), a certified reference material (molecular formula C3H3NOS, MW 101.13 g/mol) for analytical method development and quality control.
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 | C3H3NOS |
| Molecular Weight | 101.13 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1966 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related H Standards
- 1,2-oxazole-5-carbaldehyde (CAS 16401-14-2)
- Oxazole-2,4-diamine (CAS 832134-07-3)
- Oxazole-4,5-diamine (CAS 936919-07-2)
- 4-ethyl-1,3-oxazole (CAS 54300-20-8)
- 5-ethyl-1,3-oxazole (CAS 32999-02-3)
- Oxazole-5-carbaldehyde (CAS 118994-86-8)
- 1,2-Oxazole-4-carbaldehyde (CAS 65373-53-7)
- Oxazole-2-carbaldehyde (CAS 65373-52-6)
Recommended Standards
- 2-Thiazolol (CAS 82358-07-4)
- 5-Amino-1,2,3-thiadiazole (CAS 4100-41-8)
- 1H-1,2,3-Triazole-5(4H)-thione (CAS 75232-02-9)
- Isothiazol-5(2H)-one (CAS 82357-89-9)
- (1-(2-Aminophenyl)piperidin-3-yl)methanol (CAS 1154252-87-5)
- 4-Bromo-3-ethoxy-N-propylbenzenesulfonamide (CAS 886123-78-0)
- N-(thiophen-2-ylmethyl)pyridin-3-amine (CAS 1019537-85-9)
- Plerixafor 8HCl (CAS 155148-31-5)
- 2-(3-Methyl-1-pyrrolidinyl)ethylamine (CAS 23456-39-5)
- H-Tyr-Tyr-Tyr-Tyr-Tyr-Tyr-OH (CAS 6934-38-9)
- 6-chloro-N-((tetrahydrofuran-2-yl)methyl)pyridazin-3-amine (CAS 838089-56-8)
- Trimethyl(2,4,5-trimethylphenyl)silane (CAS 140435-95-6)
- Nifedipine Impurity 27 (CAS CATO-C4X-141027)
- Insulin Degludec Impurity 2 (CAS CATO-C4X-21572)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com