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Home> Products > Organic Intermediates > Pharmaceutical Intermediates > CAS DataBase Listed 9 > CAS 91-56-5
91-56-5 structure

CAS 91-56-5 Isatin | Products & Prices & Suppliers

  • Isatin (Indoline-2,3-dione) is a potent inhibitor of monoamine oxidase (MAO) with an IC50 of 3 μM. Also binds to central benzodiazepine receptors (IC50 against clonazepam, 123 μM)[1]. Also acts as an antagonist of both atrial natriuretic peptide stimulated and nitric oxide-stimulated guanylate cyclase activity[2]. Shows effect on the serotonergic system[3].

    Isatin or 1H-indole-2,3-dione is an indole derivative. The compound was first obtained by Erdmann and Laurent in 1841 as a product from the oxidation of indigo dye by nitric acid and chromic acids. The compound is found in many plants, such as Isatis tinctoria, Calanthe discolor and in Couroupita guianensis.

    Isatin is an indoledione that is the 2,3-diketo derivative of indole. It has a role as an EC (monoamine oxidase) inhibitor and a plant metabolite.|Isatin is an indole derivative first obtained by Erdman and Laurent in 1841 as an oxidation product of Indigo dye with nitric acid and chromic acids. The compound is found in many plants and Schiff bases of Isatin are have been investigated for pharmaceutical applications.|An indole-dione that is obtained by oxidation of indigo blue. It is a MONOAMINE OXIDASE INHIBITOR and high levels have been found in urine of PARKINSONISM patients.

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  • Name: Isatin
  • Molecular Weight: 147.1308
  • Formula: C8H5NO2
  • Synonyms: 2,3-dihydro-1H-indol-2,3-dione; 2,3-Diketoindoline; 2,3-Diketoindoline Indole-2,3-dione 2,3-Indolinedione; 2,3-Dioxo-2,3-dihydroindole; 2,3-Dioxoindoline; 2,3-INDOLEDIONE;
Properties Safety and Handling MSDS NMR Spectrum Computational chemical data
Safety Data
  • [Risk Codes]
  • R36/37/38:Irritating to eyes, respiratory system and skin
  • [Safety Statements]
  • S24/25:Avoid contact with skin and eyes
  • Hazard Symbols:
  • HazardClass:6.1(b)
  • Molecular Weight:
  • 147.1308
  • Density:
  • 1.367
  • Boiling Point:
  • 360.3 °C at 760 mmHg
  • Melting Point:
  • 193-195℃
  • Flash Point:
  • 220℃
  • Storage Temperature:
  • Store below +30°C.
  • Refractive index:
  • 1.661
  • Solubility:
  • soluble in water (1.9 g/L at 20°C).
  • Stability:
  • Stable. Incompatible with strong acids.
  • More Properties>>
Question & Answer
Upstream Product Downtream information
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isatin CAS 91-56-5 with discount
isatin CAS 91-56-5 with discount
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  • Description:Quick Details: Density 1.4± 0.1g /cm3 Boiling point 360.3±52.0 °C at 760 mmHg Melting point 193-195 °C (dec.)(lit.) Molecular formula C8H5NO2 Molecular weight 147.131
  • Updatetime:Oct 03 2023 
CAS91-56-5	isatin
CAS91-56-5 isatin
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Factory Supply 1H-Indole-2,3-dione
Factory Supply 1H-Indole-2,3-dione
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isatin CAS NO.91-56-5 high purity best price spot goods
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  • Brand:YOUZE 
  • Description:Quick Details Classification: Pharmaceutical Intermediate Common Name isatin CAS Number 91-56-5 Molecular Weight
  • Updatetime:Nov 25 2022 
High purity 91-56-5 Isatin
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  • Usage:Intermediates;Heterocyclic Compounds;Indoles;Simple Indoles 
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  • Description:JD 085 Product Name: Isatin
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  • Brand:Dochemical 
  • Description:Name: 1H-Indole-2,3-dione (Related Reference) EINECS: 202-077-8 Molecular Formula: C8H5NO2 CAS Registry Number: 91-56-5 Synonyms: Indole-2,3-dione(8CI); 2,3-Dihydro-1H-indole-2,3-dione; 2,3-Dihydroindole-2,3-dione; 2,3-Diketoindoline; 2,3-Dioxo-2,3-dihydroindo...
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High quality 8-Fluoro-Quinoline supplier in China
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  • Brand:Chemzhongyuan 
  • Description:Name: 1H-Indole-2,3-dione Synonyms: Isatin; Isatine; NSC 9262; Pseudoisatin; 2,3-Indolindione; 2,3-Dioxoindoline; 2,3-Indolinedione; Isatic acid lactam; 2,3-Diketoindoline; Indole-2,3-dione(8CI); Isatinic acid anhydride; 2,3-Dioxo-2,3-dihydroindole; 2,3-Dihydr...
  • Updatetime:Jul 13 2021 
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  • Appearance:yellow to reddish crystalline solid 
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  • Usage:a reagent for the determination of Ketone and thiophene 
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  • Min.Order:1 Gram 
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  • Brand:Isen 
  • Description:【Appearance】 yellow to reddish crystalline solid【Density】 1.367 g/cm3【Melting Point】 193-195℃【Boiling Point】 360.3 °C at 760 mmHg【Refractive Index】 1.661【Flash Point】 220℃【Water】 Slightly soluble SOLVENT AUTOIGNITION【Solubilities】 Slightly so...
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  • Brand:skyrun 
  • Description:Name: 1H-Indole-2,3-dione Synonyms: Isatin; Isatine; NSC 9262; Pseudoisatin; 2,3-Indolindione; 2,3-Dioxoindoline; 2,3-Indolinedione; Isatic acid lactam; 2,3-Diketoindoline; Indole-2,3-dione(8CI); Isatinic acid anhydride; 2,3-Dioxo-2,3-dihydroindole; 2,3-Dihydr...
  • Updatetime:Jul 22 2019 
  • Appearance:contact us for more details about Isatin, CAS:91-56-5 
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  • Packaging:Glass bottle in aluminum foil bag, from mg scale to kg scale 
  • Usage:Chemicals, pharmaceutical research, pharmaceutical intermediates, reagents 
  • Brand:FINETECH 
  • Description:FINETECH INDUSTRY LIMITED is a LONDON based CRO company providing drug discovery & development services to worldwide clients. FINETECH INDUSTRY LIMITED supplies the Isatin, CAS:91-56-5 with the most competitive price and the best quality. We can offer efficien...
  • Updatetime:Nov 21 2018 
  • Appearance:powder 
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  • Description:Superiority isatin Details isatin Molecular Formula:C8H5NO2 Transportation:by air or by sea Storage:store in a cool dry place and keep awa... Keywords:isatin competitive price,isatin top quality,isatin real supplie
  • Updatetime:Feb 05 2021 
Product Name: Isatin
Product Name: Isatin
  • Updatetime:Feb 04 2017 
  • Purity:99%min 
  • Description: English Name:[Chemistry] isatin;2,3-indolinedione;1H-indole-2,3-dione   CAS NO: 91-56-5   EINECS NO:202-077-8
  • Updatetime:Nov 30 2015 
  • Purity:99% 
  • Packaging:as requested 
  • Description:orange-red powder or crystals
  • Updatetime:May 05 2019 
  • Description:Name: 1H-Indole-2,3-dione Synonyms: Indole-2,3-dione(8CI);2,3-Dihydro-1H-indole-2,3-dione;2,3-Dihydroindole-2,3-dione;2,3-Diketoindoline;2,3-Dioxo-2,3-dihydroindole;2,3-Dioxoindoline;2,3-Indolindione;2,3-Indolinedione;Isatic acid lactam;Isatin;Isatine;Isatinic...
  • Updatetime:Jun 12 2019 
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