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中文名：四甲基羅丹明-亞磷酰胺，5-異構體

英文名：TAMRA phosphoramidite, 5-isomer

分子式：C40H50N5O6P

分子量：727.83

性狀：紫色固體

純度：≥95%

溶解度：good in DMF, DMSO

保存條件：避光，干燥，-20℃保存

注意事項：取用一定要干燥，避免頻繁的溶解和凍干。

用途：僅用于科學研究或者工業應用等非醫療目的，非藥用，非食用

結構式：

This phosphoramidite is used for synthesis of oligonucleotides 5’-labeled with TAMRA.

TAMRA (carboxytetramethylrhodamine) is a xanthene dye from the rhodamine family with emission in the orange spectrum range (maximum at 563 nm). This fluorophore is traditionally used as a FRET-acceptor (and a quencher) in a pair with fluorescein (FAM) due to significant overlapping of their spectra. Thus, this phosphoramidite is convenient for the synthesis of dual-labeled probes TaqMan, which contain 5’-terminal TAMRA and FAM in the middle of the sequence or at the 3’-end (using Fluorescein dT Phosphoramidite and FAM CPG, respectively).

TAMRA 5’-labeled oligonucleotides are commonly used for quantitative PCR and fragment analysis (for example, for microsatellite marker analysis) because the equipment available has a detection channel for TAMRA frequently.

The TAMRA dye is not stable in the presence of ammonium and sterically non-hindered primary amines, so it is strongly recommended to follow specified conditions for labeled oligonucleotide deprotection.

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