Creatinine hydrochloride19230-81-0100 % similar 1-Methylhydantoin616-04-648 % similar 1-Aminohydantoin hydrochloride2827-56-741 % similar 1-Aminohydantoin6301-02-632 % similar Cardioxane149003-01-032 % similar Dimethylglycine hydrochloride2491-06-731 % similar 2-(Dimethylamino)thioacetamide hydrochloride27366-72-931 % similar Creatine57-00-130 % similar