2,2'-Diiodo-1,1'-binaphthalene CAS 76905-80-1
| CAS No. | 76905-80-1 |
| Molecular Formula | C20H12I2 |
| Molecular Weight | 506.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 2,2'-Diiodo-1,1'-binaphthalene.
2,2'-Diiodo-1,1'-binaphthalene (CAS 76905-80-1) is a high-purity analytical reference standard with the molecular formula C20H12I2 and a molecular weight of 506.12 g/mol.
Owing to iodine substitution, a polycyclic aromatic system, 2,2'-Diiodo-1,1'-binaphthalene is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 506.12 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 2,2'-Diiodo-1,1'-binaphthalene 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 | C20H12I2 |
| Molecular Weight | 506.12 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1978 |
| Halogen Content | I-containing |
Related Diiodo Standards
- (R)-2,2'-Diiodo-1,1'-binaphthalene (CAS 86688-06-4)
- (S)-2,2'-Diiodo-1,1'-binaphthalene (CAS 86688-07-5)
- 4,4'-Diiodo-1,1'-binaphthalene (CAS 62012-57-1)
- 6,8-Diiodo-3-phenyl-2-thioxo-2,3-dihydroquinazolin-4(1H)-one (CAS 37802-51-0)
- (R)-4,4'-diiodo-2,2',3,3'-tetrahydro-1,1'-spirobi[indene]-7,7'-diol (CAS 2050189-65-4)
- 2,3-Diiodo-1-(phenylsulfonyl)-1h-indole (CAS 80360-26-5)
- 1,8-Diiodo-3,3,4,4,5,5,6,6-octafluorooctane (CAS 2681-00-7)
- 3,5-Diiodo-4(4'-methoxyphenoxy)benzoic Acid Methyl Ester (CAS 33927-09-2)
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