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荧光染料
品名:
荧光染料
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麦莎,酶标
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产品介绍:

bisBenzimide H 33342 trihydrochloride 95% (TLC)

Synonym

2’-(4-Ethoxyphenyl)-5-(4-methyl-1-piperazinyl)-2,5’-bi-1H-benzimidazole trihydrochloride

bisBenzimide

HOE 33342

Hoechst 33342

Molecular FormulaC27H28N6O · 3HCl · xH2O

Molecular Weight 561.93 (anhydrous basis)

CAS Number 23491-52-3

Descriptions

Application Useful for staining DNA, chromosomes and nuclei. May be used for fluorescence microscopy or flow cytometry.

Excitation max. = 346 nm

Emission max. = 460 nm

Biochem/physiol Actions Membrane-permeable, fluorescent DNA stains with low cytotoxicity that intercalate in A-T regions of DNA.

Properties

Assay……………………………….. 95% (TLC)

solubility H2O: 20 mg/mL

phosphate buffers: precipitates

storage temp. −20°C

TEST

SPECIFICATION

APPEARANCE

YELLOW TO GREEN POWDER

SOLUBILITY

CLEAR TO VERY SLIGHTLY HAZY YELLOW TO BROWN SOLUTION AT 50MG PLUS 1ML OF WATER

IDENTITY

CONSISTENT WITH STRUCTURE BY IR OR NMR

WATER BY KARL FISCHER

NMT 16.1% (6MOLES/MOLE)

ELEMENTAL ANALYSIS *

54.8 TO 60.6% CARBON

14.2 TO 15.7% NITROGEN

PURITY BY THIN LAYER CHROMATOGRAPHY

NLT 95%

RECOMMENDED RETEST

3 YEARS

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