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D8417 Sigma

4′,6-Diamidino-2-phenylindole dihydrochloride

powder, BioReagent, suitable for cell culture, ≥98% (HPLC and TLC), suitable for fluorescence

Synonym: 2-(4-Amidinophenyl)-6-indolecarbamidine dihydrochloride, DAPI dihydrochloride



Related Categories In Vivo/In Vitro Tracking of Stem Cells, Apoptosis Detection, Apoptosis and Cell Cycle, Cell Biology, Cell Culture,
product line   BioReagent
assay   ≥98% (HPLC and TLC)
form   powder
solubility   H2O: soluble20 mg/mL (Heat or sonication may be required. Solutions stored in the dark at room temperature or 4 °C should be stable for 2 to 3 weeks.)
  PBS: insoluble
absorption   ε/263 nm, H2O 30
fluorescence   λex 340 nm; λem 488 nm (nur DAPI)
  λex 364 nm; λem 454 nm (DAPI-DNA-Komplex)
suitability   suitable for cell culture
  suitable for fluorescence
storage temp.   2-8°C


Biochem/physiol Actions

Cell permeable fluorescent minor groove-binding probe for DNA. Binds to the minor groove of double-stranded DNA (preferentially to AT rich DNA), forming a stable complex which fluoresces approximately 20 times greater than DAPI alone.


Protect from light.


1, 5, 10 mg in glass bottle


DAPI is several times more sensitive than ethidium bromide for staining DNA in agarose gels. It may be used for photofootprinting of DNA, to detect annealed probes in blotting applications by specifically visualizing the double-stranded complex, and to study the changes in DNA and analyze DNA content during apoptosis using flow cytometry. DAPI staining has also been shown to be a sensitive and specific detection method for mycoplasma.

Price and Availability

Flow Cytometry Instruments

Filter out uncertainty.
Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 
Protocols & Articles


Growth Factors in Stem Cell Biology

Growth factors are naturally occurring regulatory molecules, which bind to receptors on the cell surface. They stimulate cell and tissue function through influencing cell differentiation by changing ...
Jennifer Fries
BioFiles 2009, 4.5, 11.
Keywords: Cellular processes, Diseases, Growth factors, Stem cell biology, Therapeutic uses

Hematopoietic Cytokines

Numerous cytokines are involved in the regulation of hematopoiesis within a complex network of positive and negative regulators. Some cytokines have very narrow lineage specificities of their actions...
Jennifer Fries
BioFiles 2009, 4.5, 8.
Keywords: Applications, Clinical, Growth factors, Ligands

Mycoplasma Detection/Elimination

The maintenance of contamination-free cell lines is essential to cell-based research. Among the biggest concerns are mycoplasma contamination. Although mycoplasma do not usually kill contaminated cel...
Don Finley
BioFiles v7 n1, 2011, 14–15
Keywords: Eliminations, Metabolism, Polymerase chain reaction

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