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3-Amino-5-(2,2-dimethoxy-ethyl)-pyrazine-2-carboxylic acid methyl ester

3-Amino-5-(2-methoxy-vinyl)-pyrazine-2-carboxylic acid methyl ester

3-Amino-5-(2-methoxy-ethyl)-pyrazine-2-carboxylic acid methyl ester

3-Chloro-5-(1-ethoxy-vinyl)-pyridine-2-carboxylic acid methyl ester

3-Amino-5-difluoromethyl-pyridine-2-carboxylic acid

5-Difluoromethyl-3-nitro-pyridine-2-carboxylic acid

5-Difluoromethyl-3-nitro-pyridine-2-carboxylic acid tert-butyl ester

(3-Methyl-3h-imidazol-4-ylmethoxy)-acetic acid tert-butyl ester

(1-Pyridin-4-yl-ethoxy)-acetic acid tert-butyl ester

4-(2,4-Dichloro-phenyl)-2-methyl-piperazine-1-carboxylic acid tert-butyl ester