7-iodo-1H,2H,3H-pyrazolo[1,5-a]imidazole CAS 1909324-91-9
| CAS No. | 1909324-91-9 |
| Molecular Formula | C5H6IN3 |
| Molecular Weight | 235.03 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
7-iodo-1H,2H,3H-pyrazolo[1,5-a]imidazole (CAS 1909324-91-9) is a high-purity analytical reference standard with the molecular formula C5H6IN3 and a molecular weight of 235.03 g/mol.
Structurally, 7-iodo-1H,2H,3H-pyrazolo[1,5-a]imidazole (C5H6IN3) contains a nitrile group, iodine substitution. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 235.03 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), 7-iodo-1H,2H,3H-pyrazolo[1,5-a]imidazole 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 | C5H6IN3 |
| Molecular Weight | 235.03 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1995 |
| Halogen Content | I-containing |
| Nitrogen Atoms | 3 |
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