5,6,7,8-Tetrahydroimidazo(1,2-a)pyrazine91476-80-131 % similar 1,3-Thiazol-2-ylmethanol14542-12-230 % similar 2-Methyl-5-pyrimidinemethanol2239-83-030 % similar 1H-Imidazole-2-methanol3724-26-330 % similar 2-Pyridinemethanol586-98-130 % similar