Fluorescein Maleimide

NOTE: This product no longer includes a labeled DNA standard. 

Cat. No: SP-1502
Price: $101.00
Unit Size: 12 mg


Fluorescein Maleimide is used to label free thiol groups with fluorescein.  This fluorescent label can be directly visualized or used as a specific tag that can be detected with anti-fluroescein antibodies.

Cat. No. SP-1502-12
Unit Size 12 mg
Country of Manufacture United States
Target for Labeling DNA, Oligonucleotides, Protein, RNA
Required Reactive Group Thiol Group
Tag/Group Incorporated Fluorescein

More Information

Fluorescein Maleimide is designed for fluoresceinating proteins, nucleic acids or other molecules containing one or more thiol groups. Molecules to be labeled with Fluorescein Maleimide require free thiol groups. In the case of proteins, Fluorescein Maleimide will react with exposed cysteine residues. Alternatively, free thiols may be generated by reducing disulfide bonds or by modifying other reactive groups such as primary amines with compounds like Traut's reagent (2-iminothiolane).

For labeling nucleic acids, thiols can be introduced into DNA, RNA, or oligonucleotides using the 5' EndTag™ or 3' EndTag™ nucleic acid labeling systems.

This fluorescent label can be directly detected or used as a hapten and detected with our high affinity antibody reagents. (Excitation maximum at 495 nm; emission maximum at 515 nm).

Safety Information

Warning Icon WARNING: www.P65Warnings.ca.gov

Protocols/Data Sheets/SDS