TAMRA maleimide, 5-isomer

Cat. # Quantity Price Lead time
17180 1 mg $110.00 in stock
27180 5 mg $210.00 in stock
47180 25 mg $410.00 in stock
57180 50 mg $695.00 in stock
67180 100 mg $1190.00 in stock

Maleimide derivative of TAMRA (tetramethylrhodamine) for the labeling of thiol groups. Pure 5-isomer of 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 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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