1H-Imidazole-4-sulfonyl chloride CAS 58767-51-4
| CAS No. | 58767-51-4 |
| Molecular Formula | C3H3ClN2O2S |
| Molecular Weight | 166.59 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
1H-Imidazole-4-sulfonyl chloride (CAS 58767-51-4) is a high-purity analytical reference standard with the molecular formula C3H3ClN2O2S and a molecular weight of 166.59 g/mol.
1H-Imidazole-4-sulfonyl chloride (C3H3ClN2O2S) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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), 1H-Imidazole-4-sulfonyl chloride 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 | C3H3ClN2O2S |
| Molecular Weight | 166.59 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, 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; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1973 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related H Standards
- 1H-imidazole-2-sulfonyl chloride (CAS 281221-70-3)
- 1H-Imidazole-4-sulfinic acid, 1-methyl-, sodium salt (1:1) (CAS 1861353-54-9)
- 191725-71-0 1H-Imidazole-1-acetic acid, alpha-methyl-, ethyl ester (9CI) (CAS 191725-71-0)
- methyl imidazole-1-carbodithioate (CAS 74734-11-5)
- 1H-Imidazole, 4,5-dihydro-5-methyl-2-phenyl- (CAS 939-06-0)
- 1H-Imidazole-1-sulfonyl Azide (CAS 952234-37-6)
- 2-(1h-Imidazole-2-carbonyl)pyridine (CAS 203664-11-3)
- 3-(1h-Imidazole-2-carbonyl)pyridine (CAS 890094-97-0)
Recommended Standards
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