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F7250 批发供应sigma FITC异硫氰酸荧光素价格

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批发供应sigma FITC 异硫氰酸荧光素(F7250)价格



品名:FITC 异硫氰酸荧光素中文:异硫氰酸荧光素货号:sigma-F7250/sigma货号F7250CAS:3326-32-7规格:50mg品Pai:sigma供应商:北京杰辉博高生物库存:北京杰辉博高现货库存FITC 异硫氰酸荧光素,sigma货号F7250,CAS:3326-32-7, 北京杰辉博高现货说明:可用于做蛋白荧光标记试剂,蛋白示踪,抗体标记,快速诊断病原菌。别名:Fluorescein isothiocyanate isomer I;异硫氰酸荧光橙红;异硫氰酸荧光黄;异硫氰酸荧光红分子式:C20H11O5NCS 分子量:389.38CAS#:3326-32-7外观:黄色粉末纯度:≥90% (HPLC)熔点:>360 ℃溶解性:微溶于丙酮,参考浓度1mg/ml。R:42/43 S:22-36/37-45储存条件: 2-8℃From Sigma F7250

异硫氰酸荧光素 (fluorescein isothiocyanate, FITC) FITC纯品为黄色或橙黄色结晶粉末,易溶于水和酒精溶剂。有两种异构体,其中异构体Ⅰ型在效率、稳定性与蛋白质结合力等方面都更优良。FITC分子量为389.4,Z大吸收光波长为490~495nm,Z大发射光波长为520~530nm,呈现明亮的黄绿色荧光。FITC在冷暗干燥处可保存多年,是目前应用广泛的荧光素。其主要优点是人眼对黄绿色较为敏感,通常切片标本中的绿色荧光少于红色。Sigma相关产品资料:

Sigma F7250 Fluorescein isothiocyanate isomer I

suitable for protein labeling, ≥90% (HPLC), powder

Synonym: FITC, Fluorescein 5-isothiocyanate

CAS Number: 3326-32-7

Linear Formula: C21H11NO5S

Molecular Weight: 389.38

Beilstein Registry Number: 1407295

EC Number: 222-042-0

MDL number: MFCD00005063

PubChem Substance ID: 24894933

Description

Application Reagent for the FITC labeling of proteins; Microsequencing of proteins and peptides (HPLC)

Biological applications include use as a fluorescent labeling reagent for proteins, a fluorescent reagent for protein tracing, and a reagent in the fluorescent antibody technique for the rapid identification of pathogens. FITC is yellow-orange in color with an absorption maximum at495 nm. Upon excitation it emits a yellow-green color with an emission maximum at 525 nm.

Properties

assay ≥90% (HPLC)

form powder

fluorescence λex 492 nm; λem 518 nm (green)

mp >360 °C(lit.)

suitability suitable for protein labeling

storage temp. 2-8°C

Safety

Personal Protective Equipment dust mask type N95 (US), Eyeshields, Faceshields, Gloves

Hazard Codes Xn

Risk Statements 42/43

Safety Statements 22-36/37-45

WGK Germany 3




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