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268298

Sigma-Aldrich

DAPI, Dihydrochloride

Cell-permeable DNA-binding dye.

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Synonym(s):
DAPI, Dihydrochloride, 4ʹ,6-Diamidino-2-phenylindole, 2HCl
Empirical Formula (Hill Notation):
C16H15N5 · 2HCl
CAS Number:
Molecular Weight:
350.25
MDL number:

Quality Level

Assay

≥90% (HPLC)

form

solid

manufacturer/tradename

Calbiochem®

storage condition

OK to freeze
desiccated (hygroscopic)
protect from light

color

yellow

solubility

water: 5 mg/mL
ethanol: soluble
methanol: soluble

fluorescence

λex ~359 nm
λem ~461 nm

shipped in

ambient

storage temp.

−20°C

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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This Item
D9542D8417MBD0020
DAPI, Dihydrochloride Cell-permeable DNA-binding dye.

Sigma-Aldrich

268298

DAPI, Dihydrochloride

-
DAPI for nucleic acid staining

Sigma-Aldrich

D9542

DAPI

-
form

solid

form

powder

form

powder

form

liquid

color

yellow

color

-

color

-

color

-

solubility

water: 5 mg/mL, ethanol: soluble, methanol: soluble

solubility

H2O: 20 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

solubility

H2O: 20 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

solubility

-

fluorescence

λex ~359 nm, λem ~461 nm

fluorescence

λex 340 nm; λem 488 nm (nur DAPI), λex 364 nm; λem 454 nm (DAPI-DNA-Komplex)

fluorescence

λex 340 nm; λem 488 nm (nur DAPI), λex 364 nm; λem 454 nm (DAPI-DNA-Komplex)

fluorescence

λex 340 nm; λem 488 nm (nur DAPI), λex 364 nm; λem 454 nm (DAPI-DNA-Komplex)

shipped in

ambient

shipped in

-

shipped in

-

shipped in

dry ice

General description

Cell-permeable DNA-binding dye. Binds preferentially to DNA rich in adenine and thymine. Used in flow cytometry for measuring nuclear DNA content or for sorting isolated chromosomes. Useful for microscopic detection of nuclei and nuclear DNA in normal and apoptotic cells. Can also be used to detect mycoplasma. A reversible inhibitor of S-adenosyl-L-methionine decarboxylase and diamine oxidase. Also available as a 5 mg/ml mM solution in H2O (Cat. No. 508741).
Fluorescent dye specific for DNA. Binds preferentially to DNA rich in adenine and thymidine (excitation max. = 359 nm, emission max. = 461 nm). Useful for microscopic analysis of nuclei and nuclear DNA in apoptotic cells. Can also be used to detect mycoplasma. Reversible inhibitor of S-adenosyl-L-methionine decarboxylase and diamine oxidase. Cells are typically stained at 1 µg/ml.

Biochem/physiol Actions

Cell permeable: no
Primary Target
Binds preferentially to DNA rich in adenine and thymine
Product does not compete with ATP.
Reversible: yes

Warning

Toxicity: Standard Handling (A)

Reconstitution

Following reconstitution, aliquot and freeze (-20°C) for long term storage or refrigerate (4°C) for short term storage. Stock solutions are stable for up to 6 weeks at 4°C or for up to 6 months at -20°C.

Other Notes

Mathieu, C., et al. 1995. Exp. Cell Res.216, 13.
Cubria, C., et al. 1994. Comp. Biochem. Physiol. C. 105, 251.
Hotz, M.A., et al. 1994. Cytometry15, 237.
Lee, L.S., and Garnett, H.M. 1993. J. Biochem. Biophys. Methods 26, 249.
Miller, T., et al. 1993. Biotechniques15, 1042.
Gray, J.W., et al. 1982. Science238, 323.
Hessling, J.J., et al. 1980. J. Immunol. Methods38, 315.
Russels, W.C., et al. 1975. Nature253, 461.

Legal Information

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

Hazard Classifications

Skin Irrit. 2 - Skin Sens. 1A - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


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