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6-TAMRA CPG *1000 Å*

Chemical structure for 6-TAMRA CPG *1000 Å*
Chemical structure for 6-TAMRA CPG *1000 Å*
Ordering information
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Catalog Number6051
Unit Size
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InternationalSee distributors
ShippingStandard overnight for United States, inquire for international
Physical properties
Molecular weightN/A
Spectral properties
Correction Factor (260 nm)0.32
Correction Factor (280 nm)0.178
Extinction coefficient (cm -1 M -1)90000
Excitation (nm)552
Emission (nm)578
Storage, safety and handling
H-phraseH303, H313, H333
Hazard symbolXN
Intended useResearch Use Only (RUO)
R-phraseR20, R21, R22
StorageFreeze (< -15 °C); Minimize light exposure


Molecular weight
Correction Factor (260 nm)
Correction Factor (280 nm)
Extinction coefficient (cm -1 M -1)
Excitation (nm)
Emission (nm)
The light-absorbing properties of TAMRA, and spectral overlap with several commonly used fluorophores - including FAM, HEX, TET and JOE, make it useful as a FRET acceptor for the dual labeled FRET probes such as Molecular Beacons. TAMRA has been used extensively for real-time PCR and other molecular diagnostic applications. Oligonucleotides can be labeled with TAMRA using two distinct methodologies. Under standard deprotection conditions, TAMRA is not sufficiently stable; the molecule degrades in the presence of ammonium hydroxide. If standard deprotection is required, the oligonucleotide is normally synthesized with an amino group at either the 3'-, or 5'-end and post-labeled with TAMRA succinimidyl ester. Oligonucleotides synthesized using UltraMILD monomers can also be labeled directly with TAMRA, either internally by substituting any suitable dT residue with TAMRA-dT-CE phosphoramidite, or at the 3'-end using 3'-TAMRA CPG support. Subsequent deprotection of the oligo using potassium carbonate in methanol adequately removes the base protecting groups, leaving the TAMRA intact. Alternatively the deprotection of 1:1:2 t-butylamine/methanol/water allows the use of regular monomers.


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Spectral properties

Correction Factor (260 nm)0.32
Correction Factor (280 nm)0.178
Extinction coefficient (cm -1 M -1)90000
Excitation (nm)552
Emission (nm)578

Product family

NameExcitation (nm)Emission (nm)Extinction coefficient (cm -1 M -1)Correction Factor (260 nm)Correction Factor (280 nm)
6-TAMRA cadaverine552578900000.320.178
6-TAMRA ethylenediamine552578900000.320.178
5(6)-TAMRA [5(6)-Carboxytetramethylrhodamine] *CAS 98181-63-6*552578900000.320.178
6-TAMRA, SE [6-Carboxytetramethylrhodamine, succinimidyl ester] *CAS#: 150810-69-8*552578900000.320.178
6-TAMRA Maleimide [Tetramethylrhodamine-6-maleimide] *CAS 174568-68-4*552578900000.320.178
6-TAMRA azide552578900000.320.178
6-TAMRA alkyne552578900000.320.178


View all 1 references: Citation Explorer
Fluorescent DNA: the development of 7-deazapurine nucleoside triphosphates applicable for sequencing at the single molecule level
Authors: Seela F, Feiling E, Gross J, Hillenkamp F, Ramzaeva N, Rosemeyer H, Zulauf M.
Journal: J Biotechnol (2001): 269