DiI, lipophilic tracer

Cat. # Quantity Price Lead time
3225-5mg 5 mg –   in stock
3225-25mg 25 mg $80 in stock
3225-100mg 100 mg $300 in stock
Found better price? Let us know and we will propose the way forward!

DiI (DiIC18(3); 1,1′-dioctadecyl-3,3,3′,3′-tetramethylindocarbocyanine) is an orange-red fluorescent carbocyanine dye.

DiI is a widely used lipophilic dye that labels cell membranes by inserting its two long hydrocarbon (C18 carbon) chains into the lipid bilayer. The dye is weakly fluorescent until incorporated into membranes. DiI diffuses laterally to stain the entire cell, allowing it to be used as an anterograde and retrograde tracer of neurons. In intact tissue, the dye does not transfer from labeled to unlabeled cells, but some transfer may occur when the membrane is disrupted, for example, after sectioning.

DiI is often used with other tracers in dual-color studies, such as DiA and DiO.

Absorption and emission spectra of DiI

Absorption and emission spectra of DiI

Customers also purchased with this product

Cyanine3B maleimide

Derivative of a Cyanine3B dye, improved Cyanine3 dye to have higher quantum yield, for maleimide reaction chemistry.
Add this product to your cart and
get free express delivery

DAPI, blue fluorescent nucleic acid stain

DAPI (4′,6-diamidino-2-phenylindole) is a blue-emitting fluorescent DNA dye used for chromosome staining and as a nuclear counterstain in fluorescence microscopy and flow cytometry.

CM-DiI, lipophilic tracer

Orange-red fluorescent lipophilic dye for membrane labeling and cell tracking. Unlike other membrane dyes, CM-DiI persists in cells after their fixation and permeabilization.

General properties

Appearance: violet solid
Molecular weight: 961.34
CAS number: 22366-93-4
Molecular formula: C59H97IN2
Solubility: DMSO
Quality control: NMR 1H and HPLC-MS (95+%)
Storage conditions: 24 months after receival at -20°C in the dark. Transportation: at room temperature for up to 3 weeks. Desiccate.
MSDS: Download
Product specifications

Spectral properties

Excitation/absorption maximum, nm: 551
ε, L⋅mol−1⋅cm−1: 144500
Emission maximum, nm: 566
Your item has been added. View your cart or proceed to checkout
The count of items is incorrect.