Cyanine3 is a fluorophore that is widely used in molecular biology experiments such as oligonucleotide labeling followed by oligonucleotide detection. By its spectral characteristics, Cyanine3 is a dye with a fluorescence maximum at 570 nm in the yellow spectrum range.
Cyanine3 phosphoramidite 5’ is used in oligonucleotide synthesis for the production of 5’-cyanine3-labeled oligonucleotides. The reagent is compatible with various oligonucleotide synthesizers.
This phosphoramidite can be used for the synthesis of fluorescence-labeled primers and hybridization probes such as TaqMan and Molecular Beacon. Such labeled probes can be detected in multiplex real-time PCR in the TAMRA channel.
Usage:
Condensation: 3 min. Use 0.02 M iodine solution at the oxidation step to avoid degradation of the cyanine dye.
Deprotection: At room temperature with 30% aqueous ammonium solution. It is recommended to use nucleic bases with labile protective groups for deprotection for not more than 2 h at less than 55°C. AMA (30% aqueous ammonium solution/40% aqueous methylamine 1:1 (v/v)) can be used for 10 min at 65°C in the presence of acetyldeoxycytidine. If deoxyguanidine with a dimethylformamidine protective group is used during synthesis, deprotect with 30% aqueous ammonium solution for 2 h at 65°C. If deoxyguanidine with an isobutyryl protective group is used during synthesis, deprotect for 24-36 h at room temperature.
 
Lumiprobe 全新推出生命科學研究中最受歡迎的花青染料 —— Cyanine 系列。這些染料為 1970 年代廣泛應用於血管造影的經典花青染料吲哚菁綠（ICG）之改良版，具備更低的非特異性生物分子結合特性，並因其高消光係數及優異量子產率，展現出明亮且穩定的螢光表現。隨著 CMU 專利到期，這些高效能分子現已以更親民的價格，廣泛應用於各類生命科學領域。Cyanine 染料可用於標記多種目標，包括可溶性蛋白質、抗體、DNA 與寡核苷酸、胜肽（Peptides）及各類小分子。