Rhodamine B isothiocyante mixture of isomers, powder, BioReagent suitable for protein labeling, Sigma-Aldrich®

Supplier: Merck
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Synonyms: RBITC

R1755-100MG R1755-500MG R1755-1G
SIALR1755-100MGEA 111 GBP
SIALR1755-100MG SIALR1755-500MG SIALR1755-1G
Rhodamine B isothiocyante mixture of isomers, powder, BioReagent suitable for protein labeling, Sigma-Aldrich®
Rhodamine B isothiocyante

Rhodamine B isothiocyanate (RhBITC) is an organic fluorescence dye and is widely used as a fluorescent tag in a variety of biological applications.


RhBITC is adsorbed onto Ag on silica or polystyrene beads. It exhibits not only a strong surface-enhanced Raman scattering (SERS) signal but also a measurable amount of fluorescence. The RhBITC-modified Ag-deposited silica or polystyrene beads disperse well in ethanol. They are also readily coated in water with polyelectrolytes for their further derivatization with biological molecules of interest that can bind to target molecules.


Rhodamine B isothiocyanate is used for the following applications:
• Rhodamine isothiocyanate labeling
• Rhodamine-labeled synthetic APF
• Preparations of protein and fluorescent conjugates
• Fluorescent red dye

Formula: C₂₉H₃₀ClN₃O₃S
MW: 536.08 g/mol
Storage Temperature: Freezer
MDL Number: MFCD00136007
CAS Number: 36877-69-7
EINECS: 253-248-9
UN: 3335
ADR: 9,III

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Specification Test Results

labeling efficiency with bovine albumin > 70%

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