3-(4-formyl-5-hydroxy-6-methylpyridin-3-yl)propanoic acid

[2-methyl-3-phenylmethoxy-5-(phenylmethoxymethyl)pyridin-4-yl]methanol

5-hydroxy-4-(hydroxymethyl)-6-methylpyridine-3-carbaldehyde

4-(hydroxymethyl)-2-methyl-5-(pentoxymethyl)pyridin-3-ol

2-(acetamidomethylidene)-3-(hydroxymethyl)butanedioic acid