Isatin-5-sulfonic acid sodium salt dihydrate

Name: Isatin-5-sulfonic acid sodium salt dihydrate
Brand: Zemixal
SKU: ZX-031294

Reference StandardAvailable on request

Isatin-5-sulfonic acid sodium salt dihydrate (CAS 207399-16-4) supplier Zemixal. Request a quote with price, lead time and documents.

Pack sizes

Isatin-5-sulfonic acid sodium salt dihydrate chemical structure

CAS number207399-16-4

FormulaC₈H₈NNaO₇S

Molar mass285.21 g/mol

Physical formSolid

HS code38229090

InChIKeyQOAFLTFHMZZJFP-UHFFFAOYSA-M

IUPAC namesodium;2,3-dioxo-1H-indole-5-sulfonate;dihydrate

About Isatin-5-sulfonic acid sodium salt dihydrate

Isatin-5-sulfonic acid sodium salt dihydrate belongs to the Indigo Carmine reference-standard family in the Zemixal catalogue. For your records (Reference Standard), the material is defined by CAS 207399-16-4, formula C8H8NNaO7S and molar mass 285.21 g/mol. It is handled as a solid.

Where it is used

Analytical method development
Method validation (AMV)
QC release testing
ANDA / DMF filings

Safe handling

Hazard communication follows GHS (Warning: H315, H319 and H335). Our SDS lists exposure controls and first-aid measures.

Order it in 10 mg, 25 mg, 50 mg and 100 mg packs or ask for a bulk quotation. Each lot travels with a certificate of analysis with characterisation data. Request pricing online and we confirm availability, documentation and freight to your country.

Reference standards for Indigo Carmine

See every impurity, metabolite and related compound we list for this API.

Indigo Carmine standards

Typical uses

Analytical method development
Method validation (AMV)
QC release testing
ANDA / DMF filings

Applications

Pharmaceutical Manufacturing and QC Research Labs and Universities

Specifications and identifiers

Specifications of Isatin-5-sulfonic acid sodium salt dihydrate
Product name	Isatin-5-sulfonic acid sodium salt dihydrate
Catalogue number	ZX-031294
CAS number	207399-16-4
IUPAC name	sodium;2,3-dioxo-1H-indole-5-sulfonate;dihydrate
Molecular formula	C₈H₈NNaO₇S
Molar mass	285.21 g/mol
Exact mass	284.9919
Grade	Reference Standard
Physical form	Solid
H-bond donors / acceptors	3 / 7
Topological polar surface area	114 Å²
HS code	38229090
InChIKey	QOAFLTFHMZZJFP-UHFFFAOYSA-M
SMILES	C1=CC2=C(C=C1S(=O)(=O)[O-])C(=O)C(=O)N2.O.O.[Na+]
PubChem CID	51003678
Synonyms	Isatin-5-sulfonic acid sodium salt dehydrate, sodium 2,3-dioxoindoline-5-sulfonate dihydrate, Sodium isatin-5-sulfonate dihydrate, 1H-Indole-5-sulfonicacid, 2,3-dihydro-2,3-dioxo-, sodium salt, hydrate (1:1:2), sodium2,3-dioxoindoline-5-sulfonatedihydrate, Sodium 2,3-dioxo-2,3-dihydro-1H-indole-5-sulfonate--water (1/1/2)

Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.

Safety and GHS hazards

Irritant or harmful

Signal word Warning

H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements P261, P264, P264 + P265, P271, P280, P302 + P352, P304 + P340, P305 + P351 + P338, P319, P321, P332 + P317, P337 + P317, P362 + P364, P403 + P233, P405, P501

Classification summarised from public GHS notifications. It can vary with grade and concentration, so always follow the SDS supplied with your lot.

Pack sizes

Pack sizes of Isatin-5-sulfonic acid sodium salt dihydrate
10 mg	Quoted on request
25 mg	Quoted on request
50 mg	Quoted on request
100 mg	Quoted on request

Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.

Questions about Isatin-5-sulfonic acid sodium salt dihydrate

Which CAS number identifies Isatin-5-sulfonic acid sodium salt dihydrate?

Isatin-5-sulfonic acid sodium salt dihydrate is registered under CAS 207399-16-4. You may also see it listed as Isatin-5-sulfonic acid sodium salt dehydrate, sodium 2,3-dioxoindoline-5-sulfonate dihydrate, Sodium isatin-5-sulfonate dihydrate. Our catalogue number for this item is ZX-031294.

What are the formula and molar mass of Isatin-5-sulfonic acid sodium salt dihydrate?

For Isatin-5-sulfonic acid sodium salt dihydrate, its formula is C8H8NNaO7S and its molar mass is 285.21 g/mol. InChIKey QOAFLTFHMZZJFP-UHFFFAOYSA-M lets you match it in any structure database.

How is Isatin-5-sulfonic acid sodium salt dihydrate used in pharmaceutical QC?

Isatin-5-sulfonic acid sodium salt dihydrate is a characterised reference material linked to Indigo Carmine. Laboratories use it to identify and quantify this impurity during method development and validation, stability work, batch release testing and regulatory submissions.

What grade and pack sizes are available for Isatin-5-sulfonic acid sodium salt dihydrate?

This listing is Reference Standard grade. Standard packs are 10 mg, 25 mg, 50 mg, 100 mg. Larger quantities and custom packing can be quoted on request.

Which documents come with Isatin-5-sulfonic acid sodium salt dihydrate?

Each lot ships with a batch certificate of analysis and a 16-section GHS safety data sheet. A typical COA or specification sheet can be shared with the quotation before you order.

Can Zemixal ship Isatin-5-sulfonic acid sodium salt dihydrate to my country?

Yes. Because Isatin-5-sulfonic acid sodium salt dihydrate is classed as hazardous, it travels in UN-approved packaging as dangerous goods under IATA or IMDG rules, with the export paperwork your broker needs.

More Indigo Carmine standards

Have a list of compounds to price?

Paste up to 200 CAS numbers into Bulk CAS lookup, or send one enquiry for everything in your quote list. We reply with price, lead time and documents.

Bulk CAS lookup Open quote list