5-Carboxytetramethylrhodamine

5-Carboxytetramethylrhodamine is a fluorescent dye that has commonly been used for the covalent labeling of oligonucleotides for DNA analysis. It displays excitation and emission maxima of 546 and 580 nm, respectively. 5-Carboxytetramethylrhodamine has also been used in various fluorescence polarization assays and protein FRET experiments.Formal Name: 9-(2,4-dicarboxyphenyl)-3,6-bis(dimethylamino)-xanthylium, inner salt. CAS Number: 91809-66-4. Synonyms: 5-TAMRA. Molecular Formula: C25H22N2O5. Formula Weight: 430.5. Purity: >98%. Emission: 580 nm. Excitation: 546 nm. Formulation: (Request formulation change), A solid. Solubility: DMF: 1 mg/ml, DMSO: 1 mg/ml, PBS (pH 7.2): 1 mg/ml. lambdamax: 550 nm. SMILES: O=C(C1=C(C2=C3C=CC(N(C)C)=CC3=[O+]C4=C2C=CC(N(C)C)=C4)C=CC(C(O)=O)=C1)[O-]. InChi Code: InChI=1S/C25H22N2O5/c1-26(2)15-6-9-18-21(12-15)32-22-13-16(27(3)4)7-10-19(22)23(18)17-8-5-14(24(28)29)11-20(17)25(30)31/h5-13H,1-4H3,(H-,28,29,30,31). InChi Key: YMZMTOFQCVHHFB-UHFFFAOYSA-N.