2-Iodo-5-methoxythiophene CAS 138691-27-7
| CAS No. | 138691-27-7 |
| Molecular Formula | C5H5IOS |
| Molecular Weight | 240.06 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO supplies 2-Iodo-5-methoxythiophene (CAS 138691-27-7), a certified reference material (molecular formula C5H5IOS, MW 240.06 g/mol) for analytical method development and quality control.
Owing to sulfur-containing functionality, a hydroxyl group, an ether linkage, iodine substitution, 2-Iodo-5-methoxythiophene is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 240.06 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).
CATO manufactures 2-Iodo-5-methoxythiophene 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 | C5H5IOS |
| Molecular Weight | 240.06 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.) | 1996 |
| Halogen Content | I-containing |
| Sulfur Atoms | 1 |
Related Iodo Standards
- 2-Iodo-3-methoxythiophene (CAS 64435-22-9)
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Recommended Standards
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- (5-Iodothiophen-2-yl)methanol (CAS 13781-27-6)
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- 2-(4-Acetyl-3-fluorobenzenesulfonyl)acetic acid (CAS 1311317-52-8)
- Methyl 2-chloro-4-(3,5-dimethylphenyl)benzoate (CAS 1820712-70-6)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com