2,3-dioxo-1H-indole-5-sulfonic acid
Also known as: Isatin-5-sulfonic acid, 5-Sulfoisatin, 2,3-dioxoindoline-5-sulfonic acid, 2,3-dioxo-2,3-dihydro-1H-indole-5-sulfonic acid, 2,3-Dioxo-5-indolinesulfonic acid, 1H-indole-2,3-dione-5-sulfonic acid, Isatin sulfonic acid
2,3-dioxo-1H-indole-5-sulfonic acid (CAS 7313-70-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C8H5NO5S and a molecular weight of 227.19400 g/mol. Key properties include a melting point of 143ºC and a density of 1.743g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 7313-70-4
- Jingsj CID
- J-1132506-7
- Molecular Formula
- C8H5NO5S
- Molecular Weight
- 227.19400 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 143ºC |
|---|---|
| Density | 1.743g/cm3 |
| Exact Mass | 226.98900 |
| PSA | 108.92000 |
| LogP | 1.28690 |
| Refractive Index | 1.661 |
Frequently Asked Questions
What is the CAS number of 2,3-dioxo-1H-indole-5-sulfonic acid?
The CAS number of 2,3-dioxo-1H-indole-5-sulfonic acid is 7313-70-4.
What are the molecular formula and molecular weight of 2,3-dioxo-1H-indole-5-sulfonic acid?
2,3-dioxo-1H-indole-5-sulfonic acid has molecular formula C8H5NO5S and molecular weight 227.19400 g/mol.
What are the upstream and downstream products of 2,3-dioxo-1H-indole-5-sulfonic acid?
For 2,3-dioxo-1H-indole-5-sulfonic acid, Upstream Products: isatin, Chloral hydrate, Sulfanilic acid; Downstream Products: 2-Amino-5-sulfobenzoic acid, Chloranil.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "2,3-dioxo-1H-indole-5-sulfonic acid (CAS 7313-70-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1132506-7 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.