5-Fluoro-4-methyl-2-(methylthio)pyrimidine CAS 6090-42-2
| CAS No. | 6090-42-2 |
| Molecular Formula | C6H7FN2S |
| Molecular Weight | 158.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 5-Fluoro-4-methyl-2-(methylthio)pyrimidine (CAS 6090-42-2), a certified reference material (molecular formula C6H7FN2S, MW 158.20 g/mol) for analytical method development and quality control.
5-Fluoro-4-methyl-2-(methylthio)pyrimidine (C6H7FN2S) contains a nitrile group, sulfur-containing functionality, fluorine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
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 | C6H7FN2S |
| Molecular Weight | 158.20 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Fluoro Standards
- 5-Fluoro-3-(methylthio)pyridin-2-amine (CAS 2794196-68-0)
- 2-Fluoro-6-methoxybenzene-1-thiol (CAS 1208077-78-4)
- 2-Fluoro-3-(methylthio)phenol (CAS 1243283-09-1)
- 5-Fluoro-2-(methylthio)phenol (CAS 1243442-20-7)
- 3-Fluoro-5-(methylthio)phenol (CAS 1243456-31-6)
- 3-Fluoro-4-(methylthio)phenol (CAS 13333-79-4)
- 2-Fluoro-4-(methylthio)phenol (CAS 140220-05-9)
- 3-Fluoro-5-methoxybenzenethiol (CAS 1452479-81-0)
Recommended Standards
- 5-Hydroxy-1,2,4,5-tetramethylpyrazolidin-3-one (CAS 911797-64-3)
- 5-Ethyltetrahydrofuran-3-carbohydrazide (CAS 98428-43-4)
- 5-Methyl-1-naphthol (CAS 51149-87-2)
- 5-Ethylquinoxaline (CAS 83570-43-8)
- (3R,4S)-4-Aminotetrahydro-2H-pyran-3-ol hydrochloride (CAS 1096594-11-4)
- 2-bromo-1-ethyl-3-fluorobenzene (CAS 1369889-90-6)
- 6-Bromo-4-chloro-7-fluoro-1-methylphthalazine (CAS 2654747-30-3)
- 2-(Tert-butyl) 9-methyl 2-azaspiro[5.5]Undecane-2,9-dicarboxylate (CAS 1624799-96-7)
- (S)-1-(4-iodophenyl)ethan-1-amine (CAS 56639-48-6)
- 5-Chloro-8-iodoimidazo[1,2-c]pyrimidine (CAS 2374134-99-1)
- 2-Chloro-3-(chloromethyl)pyridine hydrochloride (CAS 106651-82-5)
- 2-(5-Chloro-2-methoxyphenoxy)-1,3-difluoro-5-(trifluoromethyl)benzene (CAS 2244086-53-9)
- (3-Ethylpyridin-2-yl)methanamine (CAS 1550911-04-0)
- Fas C- Terminal Tripeptide (CAS 189109-90-8)
Why CATO?
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