2-hydroxy-3-(4-hydroxy-3-methoxyphenyl)propanoic acid 2-hydroxy-3-(4-hydroxy-3-methoxy-phenyl)propanoic acid 2-hydroxy-3-(4-hydroxy-3-methoxy-phenyl)propionic acid 2475-56-1 3-Methoxy-4-hydroxyphenyllactic acid Vanillactic acid Vanillylactic acid alpha,4-Dihydroxy-3-methoxybenzenepropanoic acid