5-Acetamido-2-(4-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)-2-sulfostyryl)benzenesulfonic acid CAS 118121-38-3
| CAS No. | 118121-38-3 |
| Molecular Formula | C20H16N2O9S2 |
| Molecular Weight | 492.48 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 5-Acetamido-2-(4-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)-2-sulfostyryl)benzenesulfonic acid is closely related to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
5-Acetamido-2-(4-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)-2-sulfostyryl)benzenesulfonic acid (CAS 118121-38-3) is a high-purity analytical reference standard with the molecular formula C20H16N2O9S2 and a molecular weight of 492.48 g/mol.
Owing to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, 5-Acetamido-2-(4-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)-2-sulfostyryl)benzenesulfonic acid is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 492.48 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 5-Acetamido-2-(4-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)-2-sulfostyryl)benzenesulfonic acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C20H16N2O9S2 |
| Molecular Weight | 492.48 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| 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 |
| Degree of Unsaturation (DBE) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 2 |
Related Acetamido Standards
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Recommended Standards
- Picroside I (CAS 27409-30-9)
- 2-(6-(6-Amino-9-((2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-9H-purin-2-yl)hex-5-yn-1-yl)isoindoline-1,3-dione (CAS 146905-68-2)
- Tenofovir alafenamide impurity 76 (CAS CATO-C4X-179776)
- 1-(3-(1H-Imidazol-1-yl)propyl)-4-(3,4-dimethoxybenzoyl)-3-hydroxy-5-(3-nitrophenyl)-1H-pyrrol-2(5H)-one (CAS 618080-98-1)
- (5-(4-Chlorophenyl)-3-(thiophen-2-yl)-1H-pyrazol-1-yl)(phenyl)methanone (CAS 259170-85-9)
- 4-(1-(tert-Butyl)-1H-pyrazol-5-yl)piperidine (CAS 1502312-97-1)
- {[4-formyl-3-methyl-1-(4-methylbenzyl)-1H-pyrazol-5-yl]thio}acetic acid (CAS 956568-49-3)
- Candicidin (CAS 1403-17-4)
- 3-[(2-Chlorophenyl)methyl]-6,7-dimethoxy-2-{[(2E)-3-phenylprop-2-en-1-yl]sulfanyl}-3,4-dihydroquinazolin-4-imine (CAS 860610-61-3)
- Cholesterol Impurity 36 (CAS 7199-91-9)
- Ethyl (4-(N-(1-phenyl-1H-pyrazol-5-yl)sulfamoyl)phenyl)carbamate (CAS 93880-94-5)
- 1-(4-Methoxy-3-(trifluoromethyl)phenyl)ethanone (CAS 149105-10-2)
- (S)-5-Ethyl-5-methylimidazolidine-2,4-dione (CAS 16820-13-6)
- Semaglutide impurity 196 (CAS CATO-C4X-2226196)
Why CATO?
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