| | Identification | Back Directory |  | [Name] 
 5-FAM Me-tetrazine
 |  | [CAS] 
 1619222-85-3
 |  | [Synonyms] 
 5-FAM Me-tetrazine
 6-Methyl-Tetrazine-5-FAM
 Spiro[isobenzofuran-1(3H),9'-[9H]xanthene]-5-carboxamide, 3',6'-dihydroxy-N-[[4-(6-methyl-1,2,4,5-tetrazin-3-yl)phenyl]methyl]-3-oxo-
 |  | [Molecular Formula] 
 C31H21N5O6
 |  | [MOL File] 
 1619222-85-3.mol
 |  | [Molecular Weight] 
 559.53
 | 
 | Hazard Information | Back Directory |  | [Description] 
 
 Tetrazine (methyltetrazine) derivative of fluorescein, pure 5-isomer. 
 Tetrazines are reactive heterodiene components for [4+2] inverse electron demand Diels-Alder reaction (ied-DA) with strained cycloalkenes (trans-cyclooctenes, cyclopropenes). This reaction is also called TCO (tetrazine-cyclooctene) ligation. The reaction is among the fastest bioconjugation reactions. |  | [Uses] 
 6-Methyl-Tetrazine-5-FAM, is a Fluorescent dye, that can be used for various labeling applications in chemistry. (Abs/Em = 492/517 nm)
 |  | [Abs/Em Maxima] 
 492/517 nm
 |  | [Fluoresene quantum yield] 
 0.93
 |  | [Extinction Coefficient] 
 74000
 |  | [CF260] 
 0.22
 |  | [CF280] 
 0.17
 | 
 |  |