H-PYG[3(6-OME)]-(C*CH2)OH

H-D-b-Ala-(6-methoxy-3-pyridyl)-OH

H-D-BETA-ALA-(6-METHOXY-3-PYRIDYL)-OH

L-BETA-HOMO(6-METHOXY-3-PYRIDYL)GLYCINE

(R)-3-AMINO-3-(6-METHOXY-3-PYRIDYL)-PROPIONIC ACID