Adenylthiomethylpentose

Adenylthiomethylpentose is a sulfur-containing nucleoside that was formerly known as vitamin L2.
In 1912, an adenine nucleoside was isolated by Hunter et al. from yeast that were grown without phosphorus or sulfur. Later that substance was shown by Levene and Sobotkal to be adenylthiomethylpentose.