5-Nitro-1H-pyrrole-2-sulfonamide CAS 55673-69-3
| CAS No. | 55673-69-3 |
| Molecular Formula | C4H5N3O4S |
| Molecular Weight | 191.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies 5-Nitro-1H-pyrrole-2-sulfonamide (CAS 55673-69-3), a certified reference material (molecular formula C4H5N3O4S, MW 191.17 g/mol) for analytical method development and quality control.
The molecular framework of 5-Nitro-1H-pyrrole-2-sulfonamide (C4H5N3O4S) is characterized by a carbohydrate-derived structure, an amide group, a sulfone group. 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.
Physical & Chemical Properties
| Molecular Formula | C4H5N3O4S |
| Molecular Weight | 191.17 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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 |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1972 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Nitro Standards
- 3-Nitro-1H-pyrrole-1-sulfonamide (CAS 2172947-78-1)
- 2-NITRO-4-FLUOROBENZOIC ACID 394-01-4 4-Fluoro-2-nitrobenzoic acid AS01879 BENZOIC ACID, 4-FLUORO-2-NITRO- BUTTPARK 45\01-65 RARECHEM AL BO 1973 (CAS 394-01-4)
- 7-Nitro-3,4-dihydronaphthalen-2(1H)-one (CAS 122520-12-1)
- 5-Nitro-3,4-dihydronaphthalen-1(2H)-one (CAS 51114-73-9)
- 6-Nitro-3,4-dihydronaphthalen-1(2H)-one (CAS 22246-26-0)
- 6-Nitro-3,4-dihydronaphthalen-2(1H)-one (CAS 200864-16-0)
- 8-Nitro-3,4-dihydronaphthalen-1(2H)-one (CAS 58161-31-2)
- 2-(4-Nitro-1H-pyrazol-3-yl)pyrazine (CAS 1342039-78-4)
Recommended Standards
- 2-(3-oxo-3,4-dihydro-2H-1,4-benzoxazin-4-yl)acetaldehyde (CAS 1000771-62-9)
- 2,6-Dioxo-1,2,3,6-tetrahydropyrimidine-4-sulfonamide (CAS 5338-86-3)
- N-(methoxycarbonyl)-O-methyl-L-threonine (CAS 1007881-21-1)
- 1,1,1-Trifluoro-n-propylmethanesulfonamide (CAS 34310-27-5)
- 8-Bromo-5-fluoro-3-iodoquinoline (CAS 1227293-58-4)
- Gadolinium(III) sulfate octahydrate (CAS 13450-87-8)
- 4,4'-Dihydroxy-[1,1'-biphenyl]-2-carboxylic acid (CAS 53197-57-2)
- 2-Bromo-5-(difluoromethoxy)pyridine (CAS 845827-14-7)
- (5-Nitrofuran-2-yl)methyl 2-bromoacetate (CAS 6281-24-9)
- 5-Cyclopropylazocan-5-ol (CAS 2010091-72-0)
- (2-Aminophenyl)(4-methoxyphenyl)methanone hydrochloride (CAS 1225326-61-3)
- (4-Methylcyclohexyl)(pyridin-3-yl)methanamine (CAS 1247371-82-9)
- 3-Bromo-1-(3,4-dimethoxyphenyl)propan-1-one (CAS 105174-63-8)
- Macrophage Inhibitory Peptide (CAS 41961-56-2)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com