2-Iodothieno[3,2-b]thiophene CAS 183308-96-5
| CAS No. | 183308-96-5 |
| Molecular Formula | C6H3IS2 |
| Molecular Weight | 266.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to sulfur-containing functionality, iodine substitution, an aromatic ring system, 2-Iodothieno[3,2-b]thiophene is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 266.12 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).
2-Iodothieno[3,2-b]thiophene (CAS 183308-96-5), molecular formula C6H3IS2 and molecular weight 266.12 g/mol, is a CATO reference standard with documented purity and traceability.
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 | C6H3IS2 |
| Molecular Weight | 266.12 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2009 |
| Halogen Content | I-containing |
| Sulfur Atoms | 2 |
Related Iodothieno Standards
- 2-Iodothieno[2,3-b]thiophene (CAS 53020-10-3)
- 4-Iodothieno[3,2-d]pyrimidine (CAS 1593776-54-5)
- 4-Iodothieno[2,3-d]pyrimidine (CAS 18740-27-7)
- 6-Iodothieno[3,2-d]pyrimidine (CAS 853681-15-9)
- 7-Iodothieno[3,2-b]pyridine (CAS 1057670-32-2)
- 2-Iodothieno[2,3-c]pyridine (CAS 1823914-47-1)
- 2-Iodothieno[2,3-b]pyridine (CAS 1823930-57-9)
- 2-Iodothieno[3,2-b]pyridine (CAS 94191-17-0)
Recommended Standards
- 6-Cyano-5-(difluoromethyl)-4-(trifluoromethyl)picolinic acid (CAS 1806993-51-0)
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- 6-Cyano-5-(difluoromethyl)-2-(trifluoromethyl)nicotinic acid (CAS 1806960-61-1)
- 5-Ethyl-2-fluoro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenol (CAS 1905413-47-9)
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- 5-BROMO-2-CHLORO-4-HYDROXYBENZONITRILE (CAS 1259020-46-6)
- 1-((4-(Benzyloxy)phenyl)(phenyl)methyl)piperazine (CAS 511510-57-9)
- Ethyl (3bR,4aR)-3b,4,4a,5-tetrahydro-1H-cyclopropa[3,4]cyclopenta[1,2-c]pyrazole-3-carboxylate (CAS 2412008-81-0)
- Hexapeptide-11 (CAS 100684-36-4)
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