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14530

bisBenzimide H 33258

Name: bisBenzimide H 33258
Brand: SIGMA

suitable for fluorescence, ≥98.0% (HPLC)

Synonym(s):

2′-(4-Hydroxyphenyl)-5-(4-methyl-1-piperazinyl)-2,5′-bi(1H-benzimidazole) trihydrochloride, 2-[2-(4-Hydroxyphenyl)-6-benzimidazoyl]-6-(1-methyl-4-piperazyl)benzimidazole trihydrochloride, BBIH, BXI-72, HOE 33258, Hoechst 33258, NSC334072

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About This Item

Empirical Formula (Hill Notation):

C₂₅H₂₄N₆O · 3HCl

CAS Number:

23491-45-4

Molecular Weight:

533.88

UNSPSC Code:

12171500

NACRES:

NA.32

PubChem Substance ID:

57647172

EC Number:

245-690-6

Beilstein/REAXYS Number:

4088183

MDL number:

MFCD00012679

Assay:

≥98.0% (HPLC)

Form:

powder

Quality level:

200

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Quality Level

200

assay

≥98.0% (HPLC)

form

powder

solubility

water and ethanol: 10 mg/mL, H₂O: soluble, ethanol: soluble

fluorescence

λ_ex 338 nm; λ_em 505 nm (pH 7.0), λ_ex 355 nm; λ_em 465 nm in TE buffer; DNA

suitability

suitable for fluorescence

storage temp.

2-8°C

SMILES string

Cl[H].Cl[H].Cl[H].[H]O[H].CN1CCN(CC1)c2ccc3NC(=NCc3c2)c4ccc5NC(=NCc5c4)c6ccc(O)cc6

InChI

1S/C27H28N6O.3ClH.H2O/c1-32-10-12-33(13-11-32)22-5-9-25-21(15-22)17-29-27(31-25)19-4-8-24-20(14-19)16-28-26(30-24)18-2-6-23(34)7-3-18;;;;/h2-9,14-15,34H,10-13,16-17H2,1H3,(H,28,30)(H,29,31);3*1H;1H2

InChI key

OWRSPPSBNWJJAR-UHFFFAOYSA-N

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Application

A bibenzimidazole dye that has been utilized as a fluorescent stain. It is membrane-permeable and selectively binds to adenine-thymine regions in the minor groove of B-form DNA with a high binding constant, making it a useful stain for DNA, chromosomes, and nuclei . It has been shown that the fluorescence is relatively insensitive to the presence of various solution reagents (i.e., BSA, RNA, Tris, sucrose, TEA/EDTA, Triton X-100, and SDS). Furthermore, the solution ionic strength and pH has been shown to be independent of the Stokes′ shift of bisBenzimide H 33258 . The properties of this dye make it useful in several applications such as detecting mycoplasma contamination in tissue culture , indicating early onset of apoptosis, sorting living cells based on DNA content, and acting as a probe for DNA-Drug interactions. Utilized in the design and development of a fluorimetric assay to quantitate cell numbers in microtiter plates. The methodology of the assay is based on Hoechst 33258 binding to DNA and is sensitive for a thousand cells. One application of this is assay is the normalization of ELISA data. The illumination of Hoechst 33253 coupled with Merocyanine 540 can be utilized as an effective method to eradicate bacterial infections (i.e., A. laidlawii contaminated corneal endothelial cell cultures) . BisBenzimide H 33258 is commonly used in many established staining protocols (David M. Terrian, Cancer Cell Signaling – Methods and Protocols,
Springer, Volume 218 ).

bisBenzimide H 33258 is useful for staining DNA, chromosomes and nuclei. bisBenzimide H 33258 may be used for fluorescence microscopy or flow cytometry.
Excitation max. = 346 nm
Emission max. = 460 nm

bisBenzimide H 33258 is useful for staining DNA, chromosomes, and nuclei. May be used for fluorescence microscopy or flow cytometry.

Biochem/physiol Actions

bisBenzimide H 33258 is a potent and selective Bcl-XL inhibitor.

bisBenzimide H 33258 is a potent and selective Bcl-XL inhibitor. bisBenzimide H 33258 is a membrane-permeable, fluorescent DNA stain with low cytotoxicity that intercalate in A-T regions of DNA.

Other Notes

Useful reagent for cytogenetic studies; for the fluorescent staining of DNA in cells; simple two-step fluorimetric assay of DNA in isolated nuclei, cell extracts, or crude homogenates using Hoechst 33258

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

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Apoptotic death in epithelial cells: cleavage of DNA to 300 and/or 50 kb fragments prior to or in the absence of internucleosomal fragmentation.

F Oberhammer et al.

The EMBO journal, 12(9), 3679-3684 (1993-09-01)

To date, apoptosis has been characterized biochemically by the production of 180-200 bp internucleosomal DNA fragments resulting from the activation of an endonuclease(s). The principal morphological feature of apoptosis is the condensation of chromatin and it has been assumed that

Hoechst 33258 staining for detecting mycoplasma contamination in cell cultures: a method for reducing fluorescence photobleaching.

M Battaglia et al.

Biotechnic & histochemistry : official publication of the Biological Stain Commission, 69(3), 152-156 (1994-05-01)

DNA fluorochrome staining with Hoechst 33258 bisbenzimide is commonly used for detection of mycoplasma contamination in cell cultures. Photobleaching of Hoechst 33258 is pronounced under the conditions of intense illumination, high magnification and resolution required for detection of mycoplasmas. To

Characterization of the minor groove environment in a drug-DNA complex: bisbenzimide bound to the poly[d(AT)].poly[d(AT)]duplex.

R Jin et al.

Proceedings of the National Academy of Sciences of the United States of America, 85(23), 8939-8942 (1988-12-01)

We compare the fluorescence properties of bisbenzimide (also known as Hoechst 33258) bound to the minor groove of the poly[d(AT)].poly[d(AT)] duplex with the corresponding fluorescence properties of bisbenzimide dissolved in neat organic solvents and mixed organic/aqueous solvents. Based on these

Use of Merocyanine 540 and Hoechst 33258 for the selective killing of contaminating mycoplasmas in cell cultures.

M Tarshis et al.

Journal of immunological methods, 168(2), 245-252 (1994-02-10)

Mycoplasma infection can substantially affect the biological properties of cells in vitro. We have devised a method for the selective killing of mycoplasmas, e.g., A. laidlawii, M. fermentans, M. hyorhinis and M. arginini, from experimentally infected cell cultures. This approach

Improved microfluorometric DNA determination in biological material using 33258 Hoechst.

C F Cesarone et al.

Analytical biochemistry, 100(1), 188-197 (1979-11-15)

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Global Trade Item Number

SKU	GTIN
14530-100MG	04061838736178
14530-500MG	04061833488706

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