thiamine

4-chloro-5-methyl-2,3-dihydrofuran

3-chloro-5-(3-chloro-2-methyl-tetrahydro-furan-2-yloxy)-pentan-2-one

3-巯基-4-氧代戊基乙酸酯

(4-amino-2-methyl-pyrimidin-5-ylmethyl)-oxalamic acid