4,4-Diiodo-3,3-dimethylbiphenyl CAS 7583-27-9
| CAS No. | 7583-27-9 |
| Molecular Formula | C14H12I2 |
| Molecular Weight | 434.05 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 4,4-Diiodo-3,3-dimethylbiphenyl is closely related to iodine substitution, a polycyclic aromatic system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
4,4-Diiodo-3,3-dimethylbiphenyl (CAS 7583-27-9) is a high-purity analytical reference standard with the molecular formula C14H12I2 and a molecular weight of 434.05 g/mol.
Owing to iodine substitution, a polycyclic aromatic system, 4,4-Diiodo-3,3-dimethylbiphenyl is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 434.05 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).
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 | C14H12I2 |
| Molecular Weight | 434.05 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1959 |
| Halogen Content | I-containing |
Related Diiodo Standards
- 2,2'-Diiodo-6,6'-dimethylbiphenyl (CAS 134453-96-6)
- 5,5'-Diiodo-2,2'-dimethylbiphenyl (CAS 1392203-19-8)
- 2,2'-Diiodo-6,6'-dimethyl-1,1'-biphenyl (CAS 144180-63-2)
- 4,4'-Diiodo-2,2'-dimethyl-1,1'-biphenyl (CAS 69571-02-4)
- 2,7-Diiodo-9H-fluoren-9-ol (CAS 39155-69-6)
- 3,5-Diiodo-DL-tyrosine (CAS 66-02-4)
- 2,7-Diiodo-9h-fluoren-9-one (CAS 16218-30-7)
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Recommended Standards
- 3-((2-Chloro-5-nitrophenyl)amino)-1-(2,4,6-trichlorophenyl)-1H-pyrazol-5(4H)-one (CAS 30707-68-7)
- 4-Bromo-2-{[(4-iodophenyl)amino]methyl}-6-methoxyphenol (CAS 329779-03-5)
- 10-Bromo-3-iodo-5,6-dihydrobenzo[f]imidazo[1,2-d][1,4]oxazepine-2-carboxamide (CAS 1451084-98-2)
- ((2R,3S,5R)-3-hydroxy-5-(5-iodo-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)tetrahydrofuran-2-yl)methyl dihydrogen phosphate (CAS 1763-02-6)
- 2-(Morpholine-4-carbonyl)benzenesulfonamide (CAS 1094537-40-2)
- 6-(tert-Butoxy)-5-cyclopropoxy-N,N-dimethylpicolinamide (CAS 1243329-86-3)
- 6-(4-Bromophenyl)-3h,4h-thieno[3,2-d]pyrimidin-4-one (CAS 852840-45-0)
- 2-(2,4,5-Trimethylphenyl)butanoic acid (CAS 1481411-56-6)
- N-(3-Hydroxyphenyl)pyrazolo[1,5-a]pyrimidine-3-carboxamide (CAS 717828-52-9)
- 2-Bromo-4-chloro-6-fluorobenzamide (CAS 1135531-72-4)
- N-(3-Fluorobenzyl)-1-(piperidin-3-yl)methanamine hydrochloride (CAS 1261236-02-5)
- (R)-1-(Azetidin-2-yl)-N,N-dimethylmethanamine (CAS 1931944-95-4)
- 2-(2-Chloroimidazo[2,1-b]thiazol-6-yl)acetic acid hydrochloride (CAS 1332528-63-8)
- Semaglutide Impurity 128 (CAS 2490269-78-6)
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