5-Acetamido-2-(4-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)-2-sulfostyryl)benzenesulfonic acid CAS 118121-38-3
Purity 97%+In StockPharmaceutical Standards
| 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
5-Acetamido-2-(4-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)-2-sulfostyryl)benzenesulfonic acid (CAS 118121-38-3) is a pharmaceutical standards certified reference material from CATO. Molecular formula: C20H16N2O9S2. Molecular weight: 492.48 g/mol. ISO 17034 accredited production ensures traceable purity and reliable analytical results.
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 |
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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)
- (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)
- 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)
- Semaglutide impurity 196 (CAS CATO-C4X-2226196)
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