Molekula
Isatin
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Isatin is a heterocyclic organic compound used in pharmaceuticals, dyes, and as a synthetic intermediate. It also serves in vat dye manufacture, as an analytical reagent for detecting cuprous ions, mercaptans and thiophene, and as an ingredient in hair colouring formulations. It appears as a yellow crystalline solid and is employed in the synthesis of medicinal compounds and agrochemicals. CAS: 91-56-5, Molecular Formula: C8H5NO2, Molecular Weight: 147.13 g/mol, Storage: Ambient, Signal Word: Warning. Molekula supplies Isatin from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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500 g — $156.50 per pack
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Salmon/Marron/Red Powder |
| Assay/Purity | 95.0% min (HPLC) |
| Water | 0.2% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Melting Point | 203 °C at 760 mmHg |
| Vapour Pressure | 0.0000111 mmHg |
Source: PubChem CID 7054 (Human Metabolome Database (HMDB), Haz-Map)
Identification
| Property | Value |
|---|---|
| SKU | 18322362 |
| CAS Number | 91-56-5 |
| IUPAC Name | 1H-indole-2,3-dione |
| EC Number | 202-077-8 |
| Molecular Formula | C8H5NO2 |
| Molecular Weight | 147.13 |
| Exact Mass | 147.032 |
| SMILES | C1=CC=C2C(=C1)C(=O)C(=O)N2 |
| InChIKey | JXDYKVIHCLTXOP-UHFFFAOYSA-N |
| InChI | InChI=1S/C8H5NO2/c10-7-5-3-1-2-4-6(5)9-8(7)11/h1-4H,(H,9,10,11) |
| PubChem CID | 7054 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29337985 |
| Tariff Code | 2933790090 |
Safety & GHS
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Health Hazard
GHS07
Hazard statements
- H317 May cause an allergic skin reaction
Precautionary statements
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+352 IF ON SKIN: Wash with soap and water
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P333+313 IF skin irritation or a rash occurs: Get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- 1H-Indole-2,3-dione
- 2,3-dihydro-1H-indole-2,3-dione
- 2,3-Diketoindoline
- 2,3-Dioxo-2,3-dihydroindole
- 2,3-Dioxoindoline
- Isatic acid lactam
- Isatinic acid anhydride
- Isotin
- o-Aminobenzoylformic anhydride
- Pseudoisatin
Frequently asked questions
What is Isatin used for?
Isatin is primarily used as an intermediate in the synthesis of pharmaceuticals and dyes, particularly in the production of antiviral and anticancer compounds.
What is the chemical formula and molecular weight of Isatin?
The chemical formula of Isatin is C8H5NO2, and its molecular weight is 147.13 g/mol.
How should Isatin be stored?
Isatin should be stored at ambient temperature, protected from moisture and light.
What grade of Isatin does Molekula supply?
Molekula supplies Isatin in technical grade, suitable for research and industrial applications.
Can Molekula supply Isatin in bulk?
Yes, Molekula can supply Isatin in bulk quantities; please contact our sales team for pricing and availability.
What documentation comes with an order of Isatin?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS) with the shipment.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.