5-Iodo-4-methyl-2H-thiopyran-3(6H)-one CAS 141666-61-7
| CAS No. | 141666-61-7 |
| Molecular Formula | C6H7IOS |
| Molecular Weight | 254.09 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
5-Iodo-4-methyl-2H-thiopyran-3(6H)-one (CAS 141666-61-7) is a high-purity analytical reference standard with the molecular formula C6H7IOS and a molecular weight of 254.09 g/mol.
Owing to sulfur-containing functionality, a hydroxyl group, an ether linkage, iodine substitution, 5-Iodo-4-methyl-2H-thiopyran-3(6H)-one is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 254.09 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
As a certified reference material (CRM), 5-Iodo-4-methyl-2H-thiopyran-3(6H)-one 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.
Physical & Chemical Properties
| Molecular Formula | C6H7IOS |
| Molecular Weight | 254.09 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1997 |
| Halogen Content | I-containing |
| Sulfur Atoms | 1 |
Related Iodo Standards
- 2-Iodo-5-isopropyl-1,3,4-thiadiazole (CAS 1283468-78-9)
- 3-iodo-6,7-dihydro-5H-pyrazolo[5,1-b][1,3]oxazine (CAS 1383675-85-1)
- 3-iodo-2H-pyrazolo[3,4-d]pyrimidine (CAS 1414357-61-1)
- 4-Iodo-1,1,1,3-tetrafluoro-2-butene (CAS 933668-33-8)
- 2-Iodo-3-nitrothiophene (CAS 57800-78-9)
- 2-Iodo-5-nitrothiophene (CAS 6277-18-5)
- 1-iodo-3-nitrobenzene 3-I-nitrobenzene 3-Iodonitrobenzene 3-nitroiodobenzene 645-00-1 CHEBI:67123 iodo-3-nitrobenzene m-Iodonitrobenzene meta-iodonitrobenzene meta-nitroiodobenzene (CAS 645-00-1)
- 4-iodo-N,N-dimethylcyclohexan-1-amine (CAS 1353979-12-0)
Recommended Standards
- 4-Acetyl-6-chloropyridine-2-sulfonyl chloride (CAS 1393558-27-4)
- 3-Carbamoyl-5-chlorobenzene-1-sulfonyl chloride (CAS 1490401-48-3)
- 2-Acetyl-6-chloropyridine-4-sulfonyl chloride (CAS 1393550-13-4)
- 2-(5-Bromo-6-methylpyridin-2-yl)-2H-1,2,3-triazol-4-amine (CAS 1710644-25-9)
- Methyl 5-Chloro-2-pyrazinecarboxylate (CAS 33332-25-1)
- 3-Bromo-6-(difluoromethyl)-4-methoxypyridin-2-amine (CAS 1806801-74-0)
- (R)-1-(4-fluoro-3-methoxyphenyl)-2-methoxyethan-1-amine (CAS 1269924-02-8)
- 2-((5-(Phenoxymethyl)-1,3,4-oxadiazol-2-yl)thio)acetic acid (CAS 332871-56-4)
- 1-(Methylamino)pentan-2-ol (CAS 95732-50-6)
- 2-((1-Cyclohexylethyl)amino)-N-isopropylacetamide (CAS 1157146-15-0)
- N-([1,1'-Biphenyl]-2-yl)-3-methoxyisoxazole-5-carboxamide (CAS 1428358-37-5)
- 4,4''-Diethoxy-5'-(4-ethoxyphenyl)-1,1':3',1''-terphenyl (CAS 7509-23-1)
- tert-Butyl 7-amino-1-oxo-3,4-dihydroisoquinoline-2(1H)-carboxylate (CAS 1934980-92-3)
- Semaglutide Impurity 185 (CAS CATO-C4X-2226185)
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