4-(Chlorosulfonyl)-1h-pyrrole-2-carboxylic acid CAS 1096910-97-2
| CAS No. | 1096910-97-2 |
| Molecular Formula | C5H4ClNO4S |
| Molecular Weight | 209.61 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 4-(Chlorosulfonyl)-1h-pyrrole-2-carboxylic acid (CAS 1096910-97-2), a certified reference material (molecular formula C5H4ClNO4S, MW 209.61 g/mol) for analytical method development and quality control.
The molecular framework of 4-(Chlorosulfonyl)-1h-pyrrole-2-carboxylic acid (C5H4ClNO4S) is characterized by a carbohydrate-derived structure, an amide group, a sulfone group, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
As a certified reference material (CRM), 4-(Chlorosulfonyl)-1h-pyrrole-2-carboxylic acid 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 | C5H4ClNO4S |
| Molecular Weight | 209.61 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 methanol, ethanol, DMSO, water |
| 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 | 1 |
| Sulfur Atoms | 1 |
Related Chlorosulfonyl Standards
- 5-(Chlorosulfonyl)furan-2-carboxylic acid (CAS 80466-76-8)
- 3-[(chlorosulfonyl)(ethyl)amino]-2-methylpropanenitrile (CAS 1247700-03-3)
- Methyl 3-(chlorosulfonyl)cyclobutane-1-carboxylate (CAS 1248799-94-1)
- methyl 2-(chlorosulfonyl)cyclobutane-1-carboxylate (CAS 1595733-28-0)
- methyl 1-[(chlorosulfonyl)methyl]cyclopropane-1-carboxylate (CAS 1820703-07-8)
- Methyl 1-(chlorosulfonyl)cyclobutane-1-carboxylate (CAS 1909305-18-5)
- 2-(chlorosulfonyl)-2-methylpropanoyl chloride (CAS 41138-76-5)
- Ethyl 2-(chlorosulfonyl)-2-fluoroacetate (CAS 1936729-45-1)
Recommended Standards
- 2-Chloro-4-(4-fluorophenyl)-1,3,5-triazine (CAS 1053658-58-4)
- 4-Chloro-5-fluoro-2-(pyridin-2-yl)pyrimidine (CAS 1240595-42-9)
- 2-Chloro-4-(3-fluoro-phenyl)-[1,3,5]triazine (CAS 1053658-51-7)
- 5-Chloro-6-hydroxypyridine-3-sulfonic acid (CAS 1279219-02-1)
- 5-(5-AMinopentyl)-5-(2-furyl)-2,4-imidazolidinedione (CAS 878788-02-4)
- 3-(Bromomethyl)-2,4-difluoropyridine (CAS 1227574-92-6)
- 7-iodo-[1,2,4]triazolo[1,5-a]pyridine (CAS 690258-25-4)
- N-(2-((3-(3-Fluorophenyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)oxy)ethyl)-3,5-dimethylisoxazole-4-sulfonamide (CAS 1203415-31-9)
- Testolactone CIII (125 mg) (CAS 968-93-4)
- 2,2-Dimethyl-1-(naphthalen-2-yl)propan-1-one (CAS 7270-99-7)
- 8-Bromo-5-methylimidazo[1,2-a]pyridine-3-carboxylic acid (CAS 1427448-35-8)
- (3R)-Pyrrolidine-3-thiol (CAS 732208-80-9)
- 4-Fluoro-4'-nitro-3-(trifluoromethyl)-1,1'-biphenyl (CAS 646054-51-5)
- Semaglutide impurity 266 (CAS CATO-C4X-2226266)
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