3,5-Diiodo-1H-indazole CAS 351456-48-9
| CAS No. | 351456-48-9 |
| Molecular Formula | C7H4I2N2 |
| Molecular Weight | 369.93 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 369.93 g/mol gives 3,5-Diiodo-1H-indazole distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
3,5-Diiodo-1H-indazole (CAS 351456-48-9), molecular formula C7H4I2N2 and molecular weight 369.93 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C7H4I2N2, 3,5-Diiodo-1H-indazole contains a nitrile group, iodine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 369.93 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C7H4I2N2 |
| Molecular Weight | 369.93 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | I-containing |
| Nitrogen Atoms | 2 |
Related Diiodo Standards
- 3,7-Diiodo-1H-indazole (CAS 1000342-61-9)
- 3,4-Diiodo-1H-pyrrolo[2,3-b]pyridine (CAS 1352397-06-8)
- 2,3-Diiodo-5-azaindole (CAS 1427502-94-0)
- 2,4-Diiodo-6-methylnicotinonitrile (CAS 1823894-28-5)
- 3,4-Diiodo-1H-indazole (CAS 885518-66-1)
- 4,6-Diiodo-1H-indole (CAS 885520-37-6)
- 2,6-Diiodo-7H-purine (CAS 98027-95-3)
- 3,5-Diiodo-4-methylbenzaldehyde (CAS 861118-00-5)
Recommended Standards
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- Axitinib Impurity 38 (CAS 319472-78-1)
- 5,5-Dimethyloxepan-2-one (CAS 60187-76-0)
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- tert-Butyl ((6-iodo-2-methylpyridin-3-yl)methyl)carbamate (CAS 1352503-51-5)
- Chrysosplenol D (CAS 14965-20-9)
- Ethyl (1-(4-fluorophenyl)-2,5-dioxopyrrolidin-3-yl)glycinate (CAS 340703-52-8)
- 3-(Piperazin-2-yl)phenol (CAS 773795-54-3)
- 2-(Diethyl-1,2-oxazol-4-yl)acetic acid (CAS 1258641-13-2)
- 3-Methyl-5,6,7,8-tetrahydro-[1,2,4]triazolo[4,3-a]pyrazine-6-carboxylic acid (CAS 144888-67-5)
- Lafutidine Impurity 8 (CAS 169899-15-4)
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