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Sigma-Aldrich

Hoechst 33258 solution

1 mg/mL in H2O, ≥98.0% (HPLC)

Synonym(s):

bisBenzimide H 33258 solution

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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
PubChem Substance ID:
329770334
NACRES:
NA.32

Quality Level

100

Assay

≥98.0% (HPLC)

form

liquid

concentration

1 mg/mL in H2O

solubility

DMF: soluble
H2O: soluble

fluorescence

λex 355 nm; λem 465 nm in TE buffer; DNA

storage temp.

2-8°C

SMILES string

Cl.Cl.Cl.CN1CCN(CC1)c2ccc3[nH]c(nc3c2)-c4ccc5nc([nH]c5c4)-c6ccc(O)cc6

InChI

1S/C25H24N6O.3ClH/c1-30-10-12-31(13-11-30)18-5-9-21-23(15-18)29-25(27-21)17-4-8-20-22(14-17)28-24(26-20)16-2-6-19(32)7-3-16;;;/h2-9,14-15,32H,10-13H2,1H3,(H,26,28)(H,27,29);3*1H

InChI key

SMNPLAKEGAEPJD-UHFFFAOYSA-N

General description

Hoechst 33258, also known as bisbenzimide, is a fluorescent blue dye. It is categorized as a chromosomal stain that binds to the minor groove of the DNA double helix recognizing a run of four A-T base pairs.

Application

Hoechst 33258 is used to estimate DNA concentration in samples by fluorometry which is better than spectrophotometry, allowing the determination of nanogram quantities of DNA. Also, Hoechst 33258 is suitable to detect mycoplasma contamination in cell cultures due to its high fluorescence ability.

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

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