4,5-dimethyl-2,3-dihydro-1,3-thiazol-2-one CAS 25444-99-9
| CAS No. | 25444-99-9 |
| Molecular Formula | C5H7NOS |
| Molecular Weight | 129.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 129.18 g/mol gives 4,5-dimethyl-2,3-dihydro-1,3-thiazol-2-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 4,5-dimethyl-2,3-dihydro-1,3-thiazol-2-one (CAS 25444-99-9), a certified reference material (molecular formula C5H7NOS, MW 129.18 g/mol) for analytical method development and quality control.
Structurally, 4,5-dimethyl-2,3-dihydro-1,3-thiazol-2-one (C5H7NOS) contains an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 3.0, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 129.18 g/mol, it falls into the low-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
CATO manufactures 4,5-dimethyl-2,3-dihydro-1,3-thiazol-2-one under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C5H7NOS |
| Molecular Weight | 129.18 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.) | 1964 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related dimethyl Standards
- 1,2-Dimethyl-1H-1,2,3-triazole-5(2H)-thione (CAS 64808-28-2)
- 1,4-Dimethyl-1H-1,2,4-triazole-5(4H)-thione (CAS 21885-29-0)
- 3,4-Dimethyl-1H-1,2,4-triazole-5(4H)-thione (CAS 38942-50-6)
- N,3-Dimethyl-1,2,4-thiadiazol-5-amine (CAS 35550-13-1)
- N,5-Dimethyl-1,3,4-thiadiazol-2-amine (CAS 38917-35-0)
- (S)-(4,4-Dimethyl-pyrrolidin-2-yl)-methanol (CAS 212890-85-2)
- 1,2-Dimethyl-4-piperidinol (CAS 45673-43-6)
- 2,2-Dimethyl-4-piperidinol (CAS 937681-12-4)
Recommended Standards
- 3-Methyl-5-(methylthio)-1H-1,2,4-triazole (CAS 34985-98-3)
- 4,5-Dimethyloxazole-2(3H)-thione (CAS 6670-14-0)
- 3-Fluoroquinuclidine (CAS 2231675-21-9)
- 4-Ethyl-1,2,3-thiadiazol-5-amine (CAS 78385-16-7)
- 2-(1-Hydroxy-2-methylcyclopentyl)acetic acid (CAS 1480532-13-5)
- (11aS)-3,7-Bis[3,5-bis(trifluoromethyl)phenyl]-10,11,12,13-tetrahydro-5-hydroxy-diindeno[7,1-de:1',7'-fg][1,3,2]dioxaphosphocin-5-oxide (CAS 1258327-07-9)
- 1,1-Bis(4-chlorophenyl)-2-(4-methylbenzenesulfonyl)ethan-1-ol (CAS 110052-75-0)
- DL-3-(3,4-Dihydroxyphenyl)-2-methylalanine Ethyl Ester (CAS 14298-24-9)
- 5-Bromo-2-(2,5-dichlorophenyl)-2H-1,2,3-triazol-4-amine (CAS 1779134-52-9)
- Benzeneacetic acid, 2-(bromomethyl)-a-(methoxyimino)-, methyl ester, (aE)- 133409-72-0 (CAS 133409-72-0)
- (S)-3-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-4-(4-(tert-butoxy)phenyl)butanoic acid (CAS 219967-69-8)
- 2-Phenoxybenzenesulfonamide (CAS 23393-41-1)
- Polaprezinc impurity 29 (CAS 21032-84-8)
- Liraglutide Impurity 6 TFA Salt (CAS CATO-C4X-19926)
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