DAPI is suitable for staining bacterial chromosomes, including those of E. coli.
D9542
DAPI
DAPI
for nucleic acid staining
Synonym(s):
4′,6-Diamidino-2-phenylindole dihydrochloride, 2-(4-Amidinophenyl)-6-indolecarbamidine dihydrochloride, DAPI dihydrochloride
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1 MG
$14.50
5 MG
$71.40
10 MG
$110.00
50 MG
$483.00
About This Item
Empirical Formula (Hill Notation):
C16H15N5 · 2HCl
CAS Number:
Molecular Weight:
350.25
Beilstein/REAXYS Number:
4894417
EC Number:
MDL number:
UNSPSC Code:
12352200
PubChem Substance ID:
NACRES:
NA.52
Recommended Products
grade
Molecular Biology
for molecular biology
assay
≥98% (HPLC)
form
powder
technique(s)
transfection: suitable
solubility
H2O: 20 mg/mL
PBS: insoluble
ε (extinction coefficient)
30 at 263 nm in H2O at 1 mM
fluorescence
λex 340 nm; λem 488 nm (nur DAPI)
λex 364 nm; λem 454 nm (DAPI-DNA-Komplex)
suitability
suitable for fluorescence
storage temp.
2-8°C
SMILES string
Cl.Cl.NC(=N)c1ccc(cc1)-c2cc3ccc(cc3[nH]2)C(N)=N
InChI
1S/C16H15N5.2ClH/c17-15(18)10-3-1-9(2-4-10)13-7-11-5-6-12(16(19)20)8-14(11)21-13;;/h1-8,21H,(H3,17,18)(H3,19,20);2*1H
InChI key
FPNZBYLXNYPRLR-UHFFFAOYSA-N
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General description
DAPI (4′,6-Diamidino-2-phenylindole dihydrochloride) is a cell permeable, fluorescent dye that binds to DNA.
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.
Application
DAPI is several times more sensitive than ethidium bromide for staining DNA in agarose gels.
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.
Suitable for
DAPI has been used:-
- DNA staining in agarose gels
- analysis of changes in DNA during apoptosis
- detection of mycoplasma
- photofootprinting of DNA
- immunofluorescent staining of cells
DAPI has been used:-
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.
Caution
Protect from light.
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Description
Pricing
signalword
Warning
hcodes
Hazard Classifications
Skin Irrit. 2 - Skin Sens. 1A - STOT SE 3
target_organs
Respiratory system
Storage Class
11 - Combustible Solids
wgk_germany
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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Can this product be used to stain bacteria (E.coli) chromosome?
1 answer-
Helpful?
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What is the working dilution of DAPI that should be used to stain the nuclei of human cells?
1 answer-
Typical working concentration of DAPI used in most applications is 0.1μg/mL-10μg/mL. Please see the link below to review the product datasheet:
https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/product/documents/774/984/d9564pis.pdfPlease see the link below to review a sample protocol from Cold Spring Harbor:
https://cshprotocols.cshlp.org/content/2011/1/pdb.prot5556.longHelpful?
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what kind of the water used to dissolve DAPI? and what's the temperature should be dissolve the water?
1 answer-
This product is soluble at 20 mg/mL in water at ambient temperature. No specific water type or treatment is required. Deionized water is typically used for laboratory applications.
Please see the link below to review the product data sheet:
https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/product/documents/392/209/d9542pis.pdfHelpful?
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Can the stain concentration be used for staining fish scales and any animal cells for ICC?
1 answer-
Yes, DAPI can be used to stain fish scale nuclei. While specific data regarding the concentration and duration for staining fish scale nuclei is not available, it is suggested to start with a working concentration of around 0.5 mg/ml and optimize the staining for each specific cell type, as different cells may uptake the dye at varying rates. It is also advisable to try staining at both higher and lower concentrations. For staining mammalian cells, lower concentrations are typically used.
Helpful?
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What is the suitable DAPI for immunofluorescence staining of free-floating rat brain sections?
1 answer-
Several DAPI products are suitable for staining free-floating rat brain sections. The same DAPI used for staining mycoplasma, cultured cells, or other cell types can be used for this purpose. Any of the DAPI products listed on the website should be suitable for this use.
Helpful?
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What is the suggested concentration for product D9542-1MG?
1 answer-
The suggested concentration for product D9542-1MG, DAPI, is in the range of 0.5 to 5 ug/ml.
Helpful?
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肝細胞を染める染色プロトコルを教えてください。
1 answer-
Please see the link below to review the product datasheet, which includes basic protocols:
https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/product/documents/392/209/d9542pis.pdfA protocol specifically for hepatocyte staining is not available. However, the publication shown at the link below may be helpful:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5671579/Helpful?
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How should D9542, 4´,6-Diamidino-2-phenylindole dihydrochloride (DAPI), be stored once in solution, and for how long would it be good?
1 answer-
Solutions stored in the dark at room temperature have been stable for 2-3 weeks, but solutions exposed to light for the same time period have shown considerable degradation. At 1 mg/mL, solutions are stable in the dark at 2-8 °C for several weeks. For long-term storage, the solutions can be divided into aliquots and stored at -20 °C.
Helpful?
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How should D9542, 4´,6-Diamidino-2-phenylindole dihydrochloride (DAPI), be dissolved?
1 answer-
This product is soluble in water at 20 mg/mL, but may require heat. DAPI does not dissolve readily in PBS, 0.1 M phosphate, or 0.1 M Tris (pH 7).
Helpful?
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What is the Department of Transportation shipping information for this product?
1 answer-
Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.
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