Merck
CN

F7250

Sigma-Aldrich

荧光素异硫氰酸酯异构体I

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

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别名:
FITC, 荧光素5-异硫氰酸酯
经验公式(希尔记法):
C21H11NO5S
CAS号:
分子量:
389.38
Beilstein:
1407295
EC 号:
MDL编号:
PubChem化学物质编号:
NACRES:
NA.47

检测方案

≥90% (HPLC)

形式

powder

颜色

orange to dark orange

mp

>360 °C (lit.)

溶解性

acetone: 1 mg/mL

荧光

λex 492 nm; λem 518 nm (green)

适用性

suitable for protein labeling

application(s)

diagnostic assay manufacturing
hematology
histology

储存温度

2-8°C

SMILES string

Oc1ccc2c(Oc3cc(O)ccc3C24OC(=O)c5cc(ccc45)N=C=S)c1

InChI

1S/C21H11NO5S/c23-12-2-5-16-18(8-12)26-19-9-13(24)3-6-17(19)21(16)15-4-1-11(22-10-28)7-14(15)20(25)27-21/h1-9,23-24H

InChI key

MHMNJMPURVTYEJ-UHFFFAOYSA-N

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一般描述

荧光素异硫氰酸酯(FITC)具有黄橘色的颜色以及在495 nm处的最大吸光值。通过激发,它可以散发出在525 nm具有最大发射的黄绿色。
它被广泛用于通过胺基将荧光标记附着到蛋白质上。异硫氰酸酯基团可与蛋白中的氨基末端和伯胺反应。它已用于对蛋白质标记,包括抗体和凝集素。
异硫氰酸荧光素异构体I已被提议作为接触敏化剂。

应用

用于蛋白FITC标记的试剂;蛋白和肽的微测序(HPLC)
生物学应用,包括用于蛋白荧光标记试剂、用于蛋白示踪的荧光试剂以及作为病原体快速鉴定的荧光抗体技术中的一种试剂。在毛细管电泳(CE)测定过程中,它可用作人尿液中苯丙胺、甲基苯丙胺、3,4-亚甲二氧基甲基苯丙胺和对苯乙胺的衍生试剂。它可用于荧光抗体的制备。它可用于体外敏化研究。
用于蛋白FITC标记的试剂;蛋白和肽的微测序(HPLC)

象形图

Health hazard

警示用语:

Danger

危险声明

危险分类

Resp. Sens. 1 - Skin Sens. 1

储存分类代码

11 - Combustible Solids

WGK

WGK 3

闪点(°F)

Not applicable

闪点(°C)

Not applicable

个人防护装备

dust mask type N95 (US), Eyeshields, Faceshields, Gloves


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  1. Which document(s) contains shelf-life or expiration date information for a given product?

    If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.

  2. How do I get lot-specific information or a Certificate of Analysis?

    The lot specific COA document can be found by entering the lot number above under the "Documents" section.

  3. How do I find price and availability?

    There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote.  USA customers:  1-800-325-3010 or view local office numbers.

  4. What is the Department of Transportation shipping information for this product?

    Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product. 

  5. After the FITC (e.g., Product No. F7250) is conjugated to the protein, what is the solution stability of the conjugated protein?

    The stability of the conjugated protein will be essentially the stability of the unconjugated protein.  Some conjugated proteins might be stable when stored at -20°C and other conjugated proteins will have better solution stability at 2-8°C  If the protein concentration is too low, this also has a negative effect upon the stability of the conjugated protein.

  6. Is Product No. F7250, Fluorescein isothiocyanate isomer I, pharmaceutical grade?

    No. The product is considered suitable for research use only.

  7. How stable is FITC Isomer 1 (e.g., Product No. F7250) once conjugated to an antibody?

    FITC can photo bleach fairly rapidly. The prepared solution should be stored in a dark container and protected from light. When viewing the antibody staining under a microscope, it is advisable to use subdued fluorescent light when possible. If the fluorescent light stays at one position for too long, photo bleaching is noticeable.

  8. Is the intensity of FITC (e.g., Product No. F7250) pH dependent?

    Yes; many articles have reported the pH dependence of the fluorescence of fluorescein derivatives. See the following references: Archives Biochem. Biophys., 133, 263 (1969); J. Immunol., 95, 1165 (1966); Archives Biochem. Biophys., 73, 1 (1958); Standard test for labeling efficiency of FITC with BSA: NCCLS Approved Standard: ASM-1, 2nd ed., June, 1975; Characterization of FITC-dyes by IR and TLC: Analytical Biochem., 29, 526 (1969); Fluorescent labeling of proteins: Proc. Nat. Acad. Sci.,  72, 459 (1975); Amer. J. Pathol., 34, 1081 (1958); Fluorescent labeling of a lectin: Meth. Enzymol., 81, 65 (1982).

  9. My question is not addressed here, how can I contact Technical Service for assistance?

    Ask a Scientist here.

Vaccines: Recent Trends and Progress (2012)
Structural mechanisms of acute VEGF effect on microvessel permeability.
Fu BM and Shen S
American Journal of Physiology. Heart and Circulatory Physiology, 284, H2124-H2124 (2003)
A Ramseier et al.
Electrophoresis, 19(16-17), 2967-2975 (1998-12-31)
Amines can easily be derivatized with fluorescein isothiocyanate isomer I (FITC) and analyzed by capillary electrophoresis (CE) using alkaline buffers with or without dodecyl sulfate micelles. This paper reports the CE analysis of FITC-derivatized amphetamine, methamphetamine, 3,4-methylenedioxymethamphetamine and beta-phenylethylamine in
Human monoclonal autoantibodies specific for the bullous pemphigoid antigen 1 (BPAg 1).
Peyron E
Journal of Immunology, 153, 1333-1333 (1994)
Chromatographically pure fluorescein and tetramethylrhodamine isothiocyanates.
L C FELTON et al.
Analytical biochemistry, 2, 178-180 (1961-04-01)

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