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lumiprobe荧光染料TAMRA phosphoramidite, 5-isomer

发表于2024年1月20日由上海金畔生物科技有限公司

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DNA
Phosphoramidites
TAMRA phosphoramidite, 5-isomer

TAMRA phosphoramidite, 5-isomer

Oligonucleotide synthesis Phosphoramidite TAMRA (TMR, tetramethylrhodamine)

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Cat. #	Quantity	Price	Lead time	Buy this product
2497-250mg	250 mg	350.00$
2497-1g	1 g	890.00$
2497-5g	5 g	please inquire Request

Cat. #

Quantity

Price

Lead time

Buy this product

2497-250mg

250 mg

350.00$

2497-1g

1 g

890.00$

2497-5g

5 g

please inquire TAMRA phosphoramidite, 5-isomer

Request

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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.

Usage

Coupling: 7.5 min.

Deprotection: tret-buthylamine : methanol : water 1 : 1 : 3 (v/v/v) («TAMRA cocktail») for 6 hours at 60 °C, then cool down to room temperature.

Due to complete and irreversible degradation of the TAMRA dye, do NOT use aqueous ammonium and AMA for deprotecting a modified oligonucleotide from the solid-phase support.