ethyl 4-azido-2-(hydroxymethyl)-5-methylpyrimidine-6-carboxylate

Nα-(tert-butoxycarbonyl)-Nβ-[1-amino-3(S)-(4-amino-6-carboxy-5-methylpyrimidin-2-yl)propion-3-yl]-(S)-β-aminoalanine tert-butyl ester

S-erythro-β-hydroxyhistidinyl-threonylbithiazole, sulfonium salt

Nα-(tert-butoxycarbonyl)-Nβ-[1-amino-3(S)-(4-amino-6-carboethoxy-5-methylpyrimidin-2-yl)propion-3-yl]-(S)-β-aminoalanine tert-butyl ester

6-amino-4-(ethoxycarbonyl)-5-methylpyrimidine-2-carboxaldehyde