BioReagent, Biological Stain, for fluorescence analysis, for microscopy, ≥98% Biological Stain,BioReagent,for Fluorescence analysis,for Microscopy for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

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Storage & shipping

Protected from light,Store at -20°C,Avoid repeated freezing and thawing Ships Ice chest + Ice pads Check lot-specific COA for exact specifications.

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Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

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Literature proof

Cited in 0 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

Hoechst 33258 is a blue to blue-green fluorescent live cell dye that can label DNA. Hoechst 33258 can specifically bind to the minor groove of DNA (and tends to bind to A/T-rich DNA), resulting in a significant increase in fluorescence intensity. Hoechst 33258 can cross the cell membrane and cause changes in DNA structure, such as G2/M phase arrest. Hoechst 33258 can bind to live or fixed cells, and the fluorescence intensity increases with increasing solution pH. As a DNA-specific probe, Hoechst 33258 can be used to detect DNA content, analyze cell cycle, etc. The excitation wavelength of Hoechst 33258 is 350-365 nm, and the emission wavelength is 460-490 nm.

Specifications

Specifications & Purity

BioReagent, Biological Stain, for fluorescence analysis, for microscopy, ≥98%

Stability And Storage

Store at -20℃ long term (36 months). Store in the dark. Avoid freeze/thaw cycle.

Storage

Protected from light, Store at -20°C, Avoid repeated freezing and thawing

Shipped In

Ice chest + Ice pads

This product requires cold chain shipping. Ground and other economy services are not available.

Grade

Biological Stain, BioReagent, for Fluorescence analysis, for Microscopy

Purity

≥98%

Names and Identifiers

Canonical Smiles	CN1CCN(CC1)C2=CC3=C(C=C2)N=C(N3)C4=CC5=C(C=C4)N=C(N5)C6=CC=C(C=C6)O
IUPAC Name	4-[6-[6-(4-methylpiperazin-1-yl)-1H-benzimidazol-2-yl]-1H-benzimidazol-2-yl]phenol
InChIKey	INAAIJLSXJJHOZ-UHFFFAOYSA-N
INCHI	1S/C25H24N6O/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)
Isomeric SMILES	CN1CCN(CC1)C2=CC3=C(C=C2)N=C(N3)C4=CC5=C(C=C4)N=C(N5)C6=CC=C(C=C6)O
Molecular Weight	424.50

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

Download SDS →

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

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🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Taxonomic Classification

Taxonomy Tree

Kingdom Organic compounds
- Superclass Organoheterocyclic compounds
  - Class Benzimidazoles
    - Subclass Phenylbenzimidazoles

Kingdom	Organic compounds
Superclass	Organoheterocyclic compounds
Class	Benzimidazoles
Subclass	Phenylbenzimidazoles
Intermediate Tree Nodes	Not available
Direct Parent	Phenylbenzimidazoles
Alternative Parents	N-arylpiperazines Phenylimidazoles Dialkylarylamines N-methylpiperazines 1-hydroxy-2-unsubstituted benzenoids Benzene and substituted derivatives Heteroaromatic compounds Trialkylamines Azacyclic compounds Organopnictogen compounds Organooxygen compounds Hydrocarbon derivatives
Molecular Framework	Aromatic heteropolycyclic compounds
Substituents	Phenylbenzimidazole - N-arylpiperazine - 2-phenylimidazole - Dialkylarylamine - Tertiary aliphatic/aromatic amine - 1-hydroxy-2-unsubstituted benzenoid - Phenol - N-alkylpiperazine - N-methylpiperazine - Monocyclic benzene moiety - 1,4-diazinane - Benzenoid - Piperazine - Azole - Imidazole - Heteroaromatic compound - Tertiary aliphatic amine - Tertiary amine - Azacycle - Organooxygen compound - Organonitrogen compound - Hydrocarbon derivative - Organopnictogen compound - Organic oxygen compound - Organic nitrogen compound - Amine - Aromatic heteropolycyclic compound
Description	This compound belongs to the class of organic compounds known as phenylbenzimidazoles. These are compounds containing a phenylbenzimidazole skeleton, which consists of a benzimidazole moiety where its imidazole ring is attached to a phenyl group.
External Descriptors	N-methylpiperazine - bibenzimidazole
1. Djoumbou Feunang Y, Eisner R, Knox C, Chepelev L, Hastings J, Owen G, Fahy E, Steinbeck C, Subramanian S, Bolton E, Greiner R, and Wishart DS. ClassyFire: Automated Chemical Classification With A Comprehensive, Computable Taxonomy. Journal of Cheminformatics, 2016, 8:61. DOI: 10.1186/s13321-016-0174-y

3D Structure

Associated Targets(Human)

TOP1 Tclin DNA topoisomerase I (7553 Activities)

Discover Target: TOP1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

TOP2A Tclin DNA topoisomerase II alpha (6317 Activities)

Discover Target: TOP2A

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

MAP2K5 Tchem Dual specificity mitogen-activated protein kinase kinase 5 (650 Activities)

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Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

ATIC Tchem AICAR transformylase (241 Activities)

Discover Target: ATIC

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

ALOX15B Tchem Arachidonate 15-lipoxygenase, type II (7244 Activities)

Discover Target: ALOX15B

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

ALDH1A1 Tchem Aldehyde dehydrogenase 1A1 (77053 Activities)

Discover Target: ALDH1A1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

CYP2D6 Tclin Cytochrome P450 2D6 (33882 Activities)

Discover Target: CYP2D6

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

TOP2B Tclin DNA topoisomerase II beta (959 Activities)

Discover Target: TOP2B

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

CYP1A2 Tchem Cytochrome P450 1A2 (26471 Activities)

Discover Target: CYP1A2

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

TERT Tchem Telomerase reverse transcriptase (2428 Activities)

Discover Target: TERT

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

CYP2C9 Tchem Cytochrome P450 2C9 (32119 Activities)

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Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

CYP2C19 Tchem Cytochrome P450 2C19 (29246 Activities)

Discover Target: CYP2C19

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

CYP3A4 Tclin Cytochrome P450 3A4 (53859 Activities)

Discover Target: CYP3A4

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

A2780cisR (133 Activities)

Solubility	Water and ethanol: 10 mg/mL, H₂O : soluble, ethanol: soluble
Sensitivity	Light-sensitive
Molecular Weight	424.500 g/mol
XLogP3	4.000
Hydrogen Bond Donor Count	3
Hydrogen Bond Acceptor Count	5
Rotatable Bond Count	3
Exact Mass	424.201 Da
Monoisotopic Mass	424.201 Da
Topological Polar Surface Area	84.100 Å²
Heavy Atom Count	32
Formal Charge	0
Complexity	634.000
Isotope Atom Count	0
Defined Atom Stereocenter Count	0
Undefined Atom Stereocenter Count	0
Defined Bond Stereocenter Count	0
Undefined Bond Stereocenter Count	0
The total count of all stereochemical bonds	0
Covalently-Bonded Unit Count	1

Hoechst 33258 - BioReagent, Biological Stain, for fluorescence analysis, for microscopy, ≥98% , CAS No.23491-44-3

Why this grade

Storage & shipping

Quality documents

Literature proof

Overview

Specifications

Documentation

📋 Safety Data Sheet (SDS)

✅ Certificate of Analysis (COA)

📊 Datasheet

🔬 Specification Sheet

Advanced Data

Molarity Calculator

Dilution Calculator

Reconstitution Calculator

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