2,7-Diiodonaphthalene CAS 58556-77-7
| CAS No. | 58556-77-7 |
| Molecular Formula | C10H6I2 |
| Molecular Weight | 379.96 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 2,7-Diiodonaphthalene.
2,7-Diiodonaphthalene (CAS 58556-77-7), molecular formula C10H6I2 and molecular weight 379.96 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C10H6I2, 2,7-Diiodonaphthalene contains iodine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 379.96 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C10H6I2 |
| Molecular Weight | 379.96 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, 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.) | 1973 |
| Halogen Content | I-containing |
Related Diiodonaphthalene Standards
Recommended Standards
- 2,4-Diiodo-6-formylphenol 2-hydroxy-3,5-diiodobenzaldehyde 2631-77-8 3,5-Diiodosalicylaldehyde (CAS 2631-77-8)
- 8-Chloro-6-pentadecylimidazo[1,5-a]pyrimidin-2(1H)-one (CAS 143915-64-4)
- 8-Chloro-6-pentadecylimidazo[1,5-a]pyrimidin-4(1H)-one (CAS 143915-83-7)
- 1-(3-Bromo-5-iodophenyl)pyrrolidine-2,5-dione (CAS 113817-06-4)
- Tert-butyl ((1S,3R)-3-aminocyclopentyl)(methyl)carbamate (CAS 2165803-30-3)
- Methyl 2-methoxy-4-(methylimino)-4H-imidazole-5-carboxylate (CAS 648918-08-5)
- 2-(3,4-Dimethoxyphenyl)-6-methylimidazo[1,2-a]pyridine-3-carbaldehyde (CAS 727975-83-9)
- 6-Methyl-2-heptanone (CAS 928-68-7)
- N-Butyl-3-cyanobenzenesulfonamide (CAS 1016493-25-6)
- 2-Iodo-1,3-dimethyl-4-nitrobenzene (CAS 4102-46-9)
- (11aS)-(-)-10,11,12,13-Tetrahydrodiindeno[7,1-de:1',7'-fg][1,3,2]dioxaphosphocin-5-phenoxy (CAS 885701-71-3)
- 3-Methyl-1-(2-nitrophenyl)piperazine Hydrochloride (CAS 299425-74-4)
- 1-(1-Ethyl-5-methyl-1H-pyrazol-3-yl)ethanone (CAS 165743-69-1)
- Tirzepatide Impurity 57 (CAS CATO-C4X-324057)
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