Capping Solutions


High-purity capping reagent A and B mixes for DNA and RNA oligonucleotide synthesis.
Capping reagents are essential for blocking unreacted hydroxyl groups during phosphoramidite oligonucleotide synthesis. emp BIOTECH offers high-purity capping reagent A and B formulations, including ultramild and platform-specific variants. These solutions ensure synthesis fidelity and compatibility across a range of DNA and RNA workflows. Choose from acetonitrile-, THF-, and lutidine-based blends to match your protocol needs.

Capping B (Acetonitrile / Pyridine / N-methylimidazole, V / V / V = 50 : 30 : 20)
Product number: NC-0810
Capping B (Acetonitrile / Pyridine / N-methylimidazole, V / V / V = 50 : 30 : 20)
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Capping B (Acetonitrile / 2,6-Lutidine / N-methylimidazole, V / V / V = 50 : 30 : 20)
Product number: NC-0808
Capping B (Acetonitrile / 2,6-Lutidine / N-methylimidazole, V / V / V = 50 : 30 : 20)
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Capping B2 (60% lutidine in acetonitrile, for ÄKTA oligopilot ™)
Product number: NC-0807
Capping B2 (60% lutidine in acetonitrile, for ÄKTA oligopilot ™)
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Capping B1 (40% acetic anhydride in acetonitrile, for ÄKTA oligopilot ™)
Product number: NC-0806
Capping B1 (40% acetic anhydride in acetonitrile, for ÄKTA oligopilot ™)
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Capping B ( THF / N-methylimidazole /pyridine, V / V / V = 80 / 10/ 10)
Product number: NC-0803
Capping B ( THF / N-methylimidazole /pyridine, V / V / V = 80 / 10/ 10)
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Capping B, 16% N-methylimidazole in THF (Tetrahydrofuran / NMI, V / V = 84 : 16)
Product number: NC-0801
Capping B, 16% N-methylimidazole in THF (Tetrahydrofuran / NMI, V / V = 84 : 16)
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Capping A, 25% Acetic Anhydride in ACN (Acetonitrile / Acetic Anhydride, V / V = 75 : 25)
Product number: NC-0708
Capping A, 25% Acetic Anhydride in ACN (Acetonitrile / Acetic Anhydride, V / V = 75 : 25)
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Capping A, Ultramild (Tetrahydrofuran / Pyridine / Phenoxyacetic Anhydride, v/v/v = 85:10:5)
Product number: NC-0707
Capping A, Ultramild (Tetrahydrofuran / Pyridine / Phenoxyacetic Anhydride, v/v/v = 85:10:5)
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Capping A, 20% NMI in ACN, for ÄKTA oligopilott™ (Acetonitrile / N-methylimidazole, v/v = 80:20)
Product number: NC-0705
Capping A, 20% NMI in ACN, for ÄKTA oligopilott™ (Acetonitrile / N-methylimidazole, v/v = 80:20)
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Capping A, 10% Acetic Anhydride in THF (Tetrahydrofuran / Acetic Anhydride, V / V = 90 : 10)
Product number: NC-0702
Capping A, 10% Acetic Anhydride in THF (Tetrahydrofuran / Acetic Anhydride, V / V = 90 : 10)
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Capping A (Tetrahydrofuran / 2,6-Lutidine / Acetic anhydride, v/v/v = 80:10:10)
Product number: NC-0701
Capping A (Tetrahydrofuran / 2,6-Lutidine / Acetic anhydride, v/v/v = 80:10:10)
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Solvent Mix Pyridine in ACN 6:4
Product number: NC-0612
Solvent Mix Pyridine in ACN 6:4
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