(S)-mchm5U
(S)-mchm5U is a hydroxylated form of mcm5U, may be present in tRNA from the silkworm Bombyx mori. (S)-mchm5U may be present also in mammalian tRNA, and that the ALKBH8 oxygenase could be responsible for its formation. (S)-mchm5U can be used for RNA modification synthesis.