Chemical substance In organic chemistry, there can be more than one chemical compound with the same composition and molecular weight. Generally, these are called isomers. Isomers usually have substantially different chemical properties, and often may be isolated without spontaneously interconverting. A common example is glucose vs. fructose. The former is an aldehyde, the latter is a ketone. Their interconversion requires either enzymatic or acid-base catalysis. However, tautomers are an exception: the isomerization occurs spontaneously in ordinary conditions, such that a pure substance cannot be isolated into its tautomers, even if these can be identified spectroscopically or even isolated in special conditions. A
Lunar Magic Magic, and is very well received by its users. Lunar Magic Lunar Magic is a level editor created by FuSoYa for "Super Mario World". The interface runs on Microsoft Windows and allows people to create custom graphics and edit levels and the world map. According to FuSoYa, he started the development of Lunar Magic for the Super Nintendo Entertainment System game "Super Mario World", in February 2000. The first public release was on September 24, 2000. New releases with improvements continued over the years. It was last updated on February 9, 2018 to version 2.53. Reception for "Lunar Magic" has