1-ethyl-3-methoxy-pyrazole-4-sulfonyl chloride CAS 1851280-07-3
| CAS No. | 1851280-07-3 |
| Molecular Formula | C6H13ClN2O3S |
| Molecular Weight | 228.70 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.
1-ethyl-3-methoxy-pyrazole-4-sulfonyl chloride (CAS 1851280-07-3) is a high-purity analytical reference standard with the molecular formula C6H13ClN2O3S and a molecular weight of 228.70 g/mol.
1-ethyl-3-methoxy-pyrazole-4-sulfonyl chloride (C6H13ClN2O3S) 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
As a certified reference material (CRM), 1-ethyl-3-methoxy-pyrazole-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 | C6H13ClN2O3S |
| Molecular Weight | 228.70 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 methanol, ethanol, DMSO, water |
| Stability | Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 1.0 |
| CAS Registry Year (est.) | 1995 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
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Recommended Standards
- 3,4-Dihydronaphthalene-2-sulfonyl chloride (CAS 17070-56-3)
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- 4-Chloro-1-((2-methylthiazol-4-yl)methyl)-1h-pyrazol-3-amine (CAS 1496736-87-8)
- 1-(4-Chlorothieno[3,2-d]pyrimidin-6-yl)propan-1-ol (CAS 2325666-14-4)
- (S)-N-(1-phenylethyl)pentan-3-amine hydrochloride (CAS 374790-92-8)
- 2-(4-Methoxypyrimidin-2-yl)ethan-1-amine (CAS 944899-23-4)
- 5-Bromo-6-chloro-3-methyl-1H-pyrrolo[2,3-b]pyridine (CAS 1463441-04-4)
- Citalopram Impurity 95 (CAS CATO-C4X-110995)
- Carbamimidothioic Acid 9-Hydroxynonyl Ester Bromide (CAS 511545-93-0)
- Ethyl 2-(2-aminooxazol-5-yl)acetate (CAS 1120271-63-7)
- 1H-pyrazolo[4,3-b]pyridin-3-ylmethanol (CAS 1785566-87-1)
- 6- Chloro- 2- (ethylamino) pyridine- 3- carbonyl Fluoride (CAS 1092523-22-2)
- 3-Bromo-4-methoxy-1H-pyrrolo[3,2-c]pyridine (CAS 1000341-22-9)
- Insulin Degludec Impurity 10 (CAS CATO-C4X-215710)
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