5-hydroxyethyl-4-methylthiazole
1,7-bis<(4-amino-1,2-dimethyl-5-pyrimidinio)methyl>-guanine diperchlorate
7-<(4-amino-1,2-dimethyl-5-pyrimidinio)methyl>xanthine perchlorate
1,7-bis<(4-amino-1,2-dimethyl-5-pyrimidinio)methyl>-hypoxanthine diperchlorate
4-amino-1,2-dimethyl-5-(sulfonatomethyl)pyrimidinium betaine