FREE shipping to on qualifying orders when you spend or more, processed by Ossila BV. All prices ex. VAT. Qualifying orders ship free worldwide! Fast, secure, and backed by the Ossila guarantee. It looks like you are visiting from , click to shop in or change country. Orders to the EU are processed by our EU office.

It looks like you are using an unsupported browser. You can still place orders by emailing us on info@ossila.com, but you may experience issues browsing our website. Please consider upgrading to a modern browser for better security and an improved browsing experience.


Product Code B1751-10g
Price $270 ex. VAT

A fluorinated heterocyclic building

Used as a synthesis intermediate for macromolecules and fluorescent dyes in application of APIs, bioimaging, solar cells and OLEDs


Specifications | MSDS | Literature and Reviews


5-Fluorooxindole (CAS number 56341-41-4), a fluorinated oxindole, is a benzene ring fused pyrrolidone (γ-lactam) with a fluorine substituent at 5-position. 5-Fluorooxindole has proven effectiveness on alleviating inflammatory pain and improving the analgesic effects of morphine. 5-Fluorooxindole inhibits the plasticity changes, oxidative stress, and inflammatory responses cause by peripheral inflammation. The derivatives of 5-fluorooxindole are used as α-glucosidase inhibitors for prevention and treatment of type 2 diabetes.

The 3-position of 5-fluorooxindole can be functionalised through an aldol condensation reaction in a basic solution. With the expanded chromophore, 5-fluorooxindole is used as an acceptor in dye-sensitized solar cells (DSSCs) with power conversion efficiency of 6.35%. Oxindole modified polymers are exploited as donors in non-fullerene polymer solar cells with Y6 (BTP-4F) as acceptor with power conversion efficiency up to 8.27%.

Multiple functional groups

Multiple functional groups

For facile synthesis

Fluorinated building block

Fluorinated oxindole building block

For drug discovery, solar cells, and OLEDs

Worldwide shipping for 56341-41-4

Worldwide shipping

Quick and reliable shipping

High purity 56341-41-4

High purity

>98% High purity

General Information


CAS Number 56341-41-4
Chemical Formula C8H6FNO
Full Name 5-Fluoro-2-oxindole
Molecular Weight 151.14 g/mol
Synonyms 5-Fluoro-1,3-dihydroindol-2-one, 5-Fluoro-2,3-dihydro-2-oxoindole
Classification / Family Fluorinated building block, Heterocyclic building block, OLEDs, Solar cells

Chemical Structure


5-Fluorooxindole chemical structure, CAS 56341-41-4
5-Fluorooxindole chemical structure, CAS 56341-41-4

Product Details


Purity 98%
Melting Point Tm = 143 °C – 147 °C
Appearance Off-white to pale pink/beige powder

MSDS Documentation


5-Fluorooxindole5-Fluorooxindole MSDS Sheet

Literature and Reviews


  1. Bis-arylidene oxindole-betulinic acid conjugate: a fluorescent cancer cell detector with potent anticancer activity, A. Pal et al, ACS Med. Chem. Lett., 6, 612−616(2015); DOI: 10.1021/acsmedchemlett.5b00095.
  2. New oxindole-bridged acceptors for organic sensitizers: substitution and performance studies in dye-sensitized solar cells, Y. Tingare et al., Molecules, 25, 2159(2020); DOI: 10.3390/molecules25092159.
  3. Synthesis and biological evaluation of 5-fluoro-2-oxindole derivatives as potential α-glucosidase inhibitors, J. Lin et al., Front. Chem., 10, 928295(2022); DOI: 10.3389/fchem.2022.928295.

Return to the top