2-Chloropyrimidine-5-sulfonamide CAS 1155080-09-3
| CAS No. | 1155080-09-3 |
| Molecular Formula | C4H4ClN3O2S |
| Molecular Weight | 193.61 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.
2-Chloropyrimidine-5-sulfonamide (CAS 1155080-09-3), molecular formula C4H4ClN3O2S and molecular weight 193.61 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, 2-Chloropyrimidine-5-sulfonamide is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 193.61 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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), 2-Chloropyrimidine-5-sulfonamide 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 | C4H4ClN3O2S |
| Molecular Weight | 193.61 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) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1989 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Chloropyrimidine Standards
- 5-chloropyrimidine-2-sulfonamide (CAS 873398-77-7)
- 6-Chloropyrimidine-4-sulfonic acid (CAS 1209458-69-4)
- 4-Chloropyrimidine-2-sulfonic acid (CAS 1209459-59-5)
- 5-Chloropyrimidine-2,4,6-tricarbonitrile (CAS 139444-93-2)
- 5-Acetyl-6-chloropyrimidine-2,4(1H,3H)-dione (CAS 74094-82-9)
- Ethyl 2-chloropyrimidine-4-carboxylate (CAS 1196152-00-7)
- Ethyl 5-Chloropyrimidine-2-carboxylate (CAS 1227571-82-5)
- Ethyl 4-Chloropyrimidine-2-carboxylate (CAS 944906-70-1)
Recommended Standards
- Bis(cyanomethyl)sulfamoyl chloride (CAS 1016735-50-4)
- 2-Chloropyridine-4-sulfonic acid (CAS 1209458-81-0)
- 3-(3-Chloroprop-1-yn-1-yl)-5-fluorobenzonitrile (CAS 1507756-33-3)
- 6-Chloropyridine-2-sulfonic acid (CAS 133145-15-0)
- Methyl 2,3,4-tri-O-acetyl-β-D-thiogalactopyranosiduronic acid methyl ester (CAS 129541-34-0)
- 2-(Pyrrolidin-1-yl)nicotinic acid hydrochloride (CAS 1052549-87-7)
- 2,4-Dimethylbenzohydrazide (CAS 85304-03-6)
- 4-Isopropyl-2-phenylpyrimidine (CAS 127958-20-7)
- N-[4-(2-Cyclohexylethoxy)phenyl]-N-(4-methoxyphenethyl)amine (CAS 1040693-36-4)
- (5-Phenyl-1,3,4-thiadiazol-2-yl)methanamine hydrochloride (CAS 1228880-32-7)
- Paracetamol EP Impurity M (CAS 1752-24-5)
- 2-Morpholineacetic Acid (CAS 180863-27-8)
- 7-(Trifluoromethyl)-4,5-dihydro-3H-spiro[benzo[b][1,4]oxazepine-2,4'-piperidine] (CAS 1956332-84-5)
- Semaglutide Impurity 75 (CAS CATO-C4X-2226175)
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