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Fmoc-2-D-Nal-OH

Fmoc-1-D-Nal-OH

4,5-Diamino-2,6-dihydroxypyrimidine

2-Hydroxy-4-thiopyrimidine

4,6-Dihydroxy-5-nitropyrimidine

4,6-Diamino-2-mercaptopyrimidine

2,4-Dihydroxy-5-methoxypyrimidine