TAMRA maleimide, 5-isomer

Cat. # Quantity Price Lead time
17180 1 mg $110 in stock
27180 5 mg $210 in stock
47180 25 mg $410 in stock
57180 50 mg $695 in stock
67180 100 mg $1190 in stock
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TAMRA is a well-known rhodamine dye. It is available as two isomers, 5-, and 6-, which have almost identical properties, but need to be separated. This is a thiol-reactive maleimide derivative of 5-TAMRA.

Absorption and emission spectra of 5-TAMRA

Absorption and emission spectra of 5-TAMRA

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General properties

Appearance: red powder
Mass spec M+ increment: 552.2
Molecular weight: 552.58
Molecular formula: C31H28N4O6
IUPAC name: 1-[2-({3',6'-Bis(dimethylamino)-3-oxospiro[isobenzofuran-1,9'-xanthen]-5-yl}carbonylamino)ethyl]-1H-pyrrole-2,5-dione
Solubility: good in DMF, DMSO
Quality control: NMR 1H, HPLC-MS (95%)
Storage conditions: Storage: 12 months after receival at -20°C in the dark. Transportation: at room temperature for up to 3 weeks. Avoid prolonged exposure to light. Desiccate.
MSDS: Download
Product specifications

Spectral properties

Excitation/absorption maximum, nm: 541
ε, L⋅mol−1⋅cm−1: 84000
Emission maximum, nm: 567
Fluorescence quantum yield: 0.1
CF260: 0.32
CF280: 0.19
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