1 30E (3r,4r)-1-[3-amino-6-(3,4,5-trimethoxyphenyl)pyrazin-2-yl]-3-ethylpiperidine-4-carboxylic acid 1.000 2 BX1 1-[3-amino-6-(3,4,5-trimethoxyphenyl)pyrazin-2-yl]piperidine-4-carboxylic acid 0.933 3 WI2 1-[3-amino-6-(3-methoxyphenyl)pyrazin-2-yl]piperidine-4-carboxylic acid 0.800