Chemistry Heterocyclic Building Blocks Pyrazines Pyrazines ∩ Amines
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5-((tert-Butoxycarbonyl)amino)pyrazine-2-carboxylic acid
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2-Amino-5-bromo-3-(diethylamino)pyrazine
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5-Bromo-3-(piperazin-1-yl)pyrazin-2-amine
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2-Amino-5-bromo-3-pyrrolidin-1-ylpyrazine