Tetramethylrhodamine-5-iodoacetamide  (Synonyms: 5-TMRIA)

Tetramethylrhodamine-5-iodoacetamide (5-TMRIA) is a thiol-selective reactive dye that is used to non-specifically label proteins via the cysteine residues. Tetramethylrhodamine-5-iodoacetamide (5-TMRIA) can be used to covalently label DNA fragments^[1].

Tetramethylrhodamine-5-iodoacetamide (0.5, 1.0, 2.0, 3.0, 4.0, 5.0, and 7.5 mM dye) shows different results for labeling carbonic anhydrase and myoglobin. At lower dye concentrations (up to 40:1 dye:thiol ratio) fluorescence labeling of only the carbonic anhydrase band is observed. However,as concentration increases, fluorescence labeling of both carbonic anhydrase and the lower myoglobin band is observed, indicating nonspecific labeling at these dye:thiol ratios^[1].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

569.39

C₂₆H₂₄IN₃O₄

114458-99-0

CN(C1=CC2=[O+]C3=C(C=CC(N(C)C)=C3)C(C4=CC=C(NC(CI)=O)C=C4C([O-])=O)=C2C=C1)C

Room temperature in continental US; may vary elsewhere.

Please store the product under the recommended conditions in the Certificate of Analysis.

• [1]. Tyagarajan K, et al. Thiol-reactive dyes for fluorescence labeling of proteomic samples.Electrophoresis. 2003 Jul;24(14):2348-58.  [Content Brief]