80789-74-8 Isatin-5-sulfonic acid 1H-Indole-5-sulfonic acid, 2,3-dihydro-2,3-dioxo-, sodium salt 1H-Indole-5-sulfonic acid, 2,3-dihydro-2,3-dioxo-, monosodium salt 5-Indolinesulfonic acid, 2,3-dioxo- Isatin-5-sulfonic acid sodium salt Sodium 5-sulfoisatin Sodium 5-isatinsulfonate CAS 80789-74-8
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 80789-74-8 |
| Molecular Formula | C8H4NO5S Na |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
80789-74-8 Isatin-5-sulfonic acid 1H-Indole-5-sulfonic acid, 2,3-dihydro-2,3-dioxo-, sodium salt 1H-Indole-5-sulfonic acid, 2,3-dihydro-2,3-dioxo-, monosodium salt 5-Indolinesulfonic acid, 2,3-dioxo- Isatin-5-sulfonic acid sodium salt Sodium 5-sulfoisatin Sodium 5-isatinsulfonate (CAS 80789-74-8) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C8H4NO5S Na. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C8H4NO5S Na |
| Molecular Weight | 249.17 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1980 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Isatin Standards
Recommended Standards
- 2-(2-Oxo-2',3',5',6'-tetrahydrospiro[indoline-3,4'-pyran]-1-yl)acetic acid (CAS 880079-26-5)
- 2,4-Dibromo-3-fluorobenzonitrile (CAS 1803816-99-0)
- 4-Fluoro-N-[2-nitro-2-(phenylsulfonyl)vinyl]aniline (CAS 321433-82-3)
- 1,3-Bis(prop-2-yn-1-yloxy)-2-((prop-2-yn-1-yloxy)methyl)propan-2-amine (CAS 1313375-59-5)
- 5,7-Dichloro-N-(3-chlorophenyl)thiazolo[4,5-d]pyrimidine-2-sulfonamide (CAS 1000576-36-2)
- 6-Chloro-2-methyl-[1,2,4]triazolo[4,3-b]pyridazin-3(2H)-one (CAS 65866-54-8)
- Semaglutide Impurity 145 (CAS CATO-C4X-2226145)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 13829788188 / jacky.chen@cato-chem.com