3-fluoro-4-iodo-1-methyl-pyrazole CAS 1936623-58-3
| CAS No. | 1936623-58-3 |
| Molecular Formula | C4H4FIN2 |
| Molecular Weight | 225.99 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C4H4FIN2, 3-fluoro-4-iodo-1-methyl-pyrazole contains a nitrile group, fluorine/iodine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 225.99 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
3-fluoro-4-iodo-1-methyl-pyrazole (CAS 1936623-58-3), molecular formula C4H4FIN2 and molecular weight 225.99 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C4H4FIN2 |
| Molecular Weight | 225.99 g/mol |
| Appearance | 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, 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1996 |
| Halogen Content | F/I-containing |
| Nitrogen Atoms | 2 |
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- 5-fluoro-4-iodo-1-methyl-pyrazole (CAS 2171316-89-3)
- 3-Fluoro-2-morpholinopyridine-4-boronic acid (CAS 1256355-28-8)
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- (4-Fluoro-6-morpholinopyridin-3-yl)boronic acid (CAS 2225175-71-1)
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- (4-Fluoro-2-(pentyloxy)phenyl)boronic acid (CAS 2096337-00-5)
Recommended Standards
- 2-Bromo-6-(trifluoromethyl)pyridine (CAS 189278-27-1)
- 3-Bromo-2-(trifluoromethyl)pyridine (CAS 590371-58-7)
- 3-Bromo-4-(difluoromethyl)-5-fluoropyridine (CAS 1806781-40-7)
- 3-Bromo-2,4,5-trifluoroaniline (CAS 2055841-42-2)
- ((2R,4S)-4-amino-2-(4-chlorobenzyl)piperidin-1-yl)(3,5-bis(trifluoromethyl)phenyl)methanone (CAS 177707-22-1)
- (R)-5-Bromo-1-methyl-2-tritylisoindoline (CAS 194805-14-6)
- 2-Acetyl-4-bromobenzaldehyde (CAS 2385160-29-0)
- 2-Pyrrolidinomethyl-2-trifluoromethylbenzophenone (CAS 898774-79-3)
- 2,6-DibroMophenolindothyMol sodiuM salt (CAS 5415-31-6)
- n-((1h-Imidazol-2-yl)methyl)-4-bromoaniline (CAS 660405-12-9)
- Alvimopan impurity 16 (CAS CATO-C4X-114516)
- 3-Chloro-2-(cyclohexyloxy)-5-(trifluoromethyl)pyridine (CAS 1216838-34-4)
- tert-butyl (NZ)-N-[(tert-butoxycarbonylamino)-pyrazol-1-yl-methylene]carbamate (CAS 1143572-00-2)
- Semaglutide Impurity 183 (CAS 159541-28-3)
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