1,1',3,3'-Tetraiodo-4H,4'H,6H,6'H-5,5'-spirobi[silolo[3,4-c]thiophene] CAS 138452-52-5
| CAS No. | 138452-52-5 |
| Molecular Formula | C12H8I4S2Si |
| Molecular Weight | 752.03 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 1,1',3,3'-Tetraiodo-4H,4'H,6H,6'H-5,5'-spirobi[silolo[3,4-c]thiophene] (CAS 138452-52-5), a certified reference material (molecular formula C12H8I4S2Si, MW 752.03 g/mol) for analytical method development and quality control.
Owing to sulfur-containing functionality, iodine substitution, an aromatic ring system, 1,1',3,3'-Tetraiodo-4H,4'H,6H,6'H-5,5'-spirobi[silolo[3,4-c]thiophene] is typically off-white to pale yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 752.03 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C12H8I4S2Si |
| Molecular Weight | 752.03 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Halogen Content | I-containing |
| Sulfur Atoms | 2 |
Related Tetraiodo Standards
- 3,3',5,5'-Tetraiodo-2,2',4,4',6,6'-hexamethyl-1,1'-biphenyl (CAS 37055-19-9)
- 3,5,3’,5’-Tetraiodo Thyroaldehyde-13C6 (CAS 1346601-51-1)
- 2,4,5,7-TETRAIODO-6-HYDROXY-3-FLUORONE (CAS 142189-38-6)
- 4,5,6,7-Tetraiodo-3H-benzo[c][1,2]oxathiol-3-one 1,1-dioxide (CAS 1745-83-1)
- 2,2',7,7'-Tetraiodo-9,9'-spirobi[fluorene] (CAS 137181-59-0)
- 2,3,4,5-Tetraiodo-1H-pyrrole (CAS 87-58-1)
- 3,3',6,6'-Tetraiodo-2,2',7,7'-tetramethoxy-9,9'-spirobi[fluorene] (CAS 1801236-30-5)
- 2,4,5,7-Tetraiodo-3-oxo-9-(2,3,4,5-tetrachlorophenyl)-3H-xanthen-6-yl acetate (CAS 133433-82-6)
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- 4-(4-Methoxy-3-nitrobenzylidene)-2-phenyloxazol-5(4H)-one (CAS 904-42-7)
- S-(Benzofuran-2-ylmethyl) ethanethioate (CAS 59020-94-9)
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Why CATO?
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