2,6-Diiodo-4-nitrophenol CAS 305-85-1
| CAS No. | 305-85-1 |
| Molecular Formula | C6H3I2NO3 |
| Molecular Weight | 390.90 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2,6-Diiodo-4-nitrophenol (CAS 305-85-1) is a high-purity analytical reference standard with the molecular formula C6H3I2NO3 and a molecular weight of 390.90 g/mol.
Structurally, 2,6-Diiodo-4-nitrophenol (C6H3I2NO3) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, iodine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 390.90 g/mol, it falls into the moderately-high-molecular-weight range. 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.
As a certified reference material (CRM), 2,6-Diiodo-4-nitrophenol 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 | C6H3I2NO3 |
| Molecular Weight | 390.90 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | I-containing |
| Nitrogen Atoms | 1 |
Related Diiodo Standards
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- 2,6-Diiodo-3,5-dimethoxypyridine (CAS 1131335-49-3)
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Recommended Standards
- PBB No. 26 (CAS 59080-35-2)
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- PBB-No. 30 (CAS 59080-33-0)
- 1-(2,4-Dimethylphenyl)ethane-1-thiol (CAS 1152542-62-5)
- 1-[4-Nitro-3-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-phenyl]-piperidine (CAS 1355193-23-5)
- tert-butyl 2-[3-(dimethylamino)-1,2,4-oxadiazol-5-yl]pyrrolidine-1-carboxylate (CAS 1803610-60-7)
- Pyridin-4-ylmethanamine dihydrochloride (CAS 18205-56-6)
- 2-Bromo-4-(2,4-dimethylphenyl)thiazole (CAS 412923-64-9)
- (2-(Tert-butyl)pyridin-4-yl)boronic acid (CAS 2000187-68-6)
- Cetamolol (CAS 34919-98-7)
- 3-(2-Fluoro-5-nitrophenyl)-1H-1,2,4-triazol-5-amine (CAS 1799330-51-0)
- 6-Nitroindoline-1-carbaldehyde (CAS 73816-58-7)
- Galanin Message Associated Peptide (44-59) amide (CAS 125455-59-6)
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