Malachite green metabolized into LMG. Only the cation MG is deeply colored, whereas the leuco and alcohol derivatives are not. This difference arises because only the cationic form has extended pi-delocalization, which allows the molecule to absorb visible light. The leuco form of malachite green was first prepared by Hermann Fischer in 1877 by condensing benzaldehyde and dimethylaniline in the molecular ratio 1:2 in the presence of sulfuric acid. Malachite green is traditionally used as a dye. Kilotonnes of MG and related triarylmethane dyes are produced annually for this purpose. MG is active against the oomycete "Saprolegnia", which infects fish eggs in
The Malachite Box "The Stone Flower", "The Master Craftsman", "A Fragile Twig"); the tales about some mysterious forces, which contain surreal plots and mythical creatures ("The Mistress of the Copper Mountain", "The Malachite Casket", "Sinyushka's Well", "Cat's Ears"); the satirical tales about gold prospectors or greedy bailiffs ("The Manager's Boot-Soles", "Sochen and His Stones"); the tales about mine explorers ("Sinyushka's Well"). During the Great Patriotic War and in the post-war years, Bazhov started writing about Soviet armourers, steel-makers, and teemers, emphasizing the patriotic pride of the Russian workers. He also penned some stories about the Russian communist leaders, Vladimir Lenin and Joseph Stalin.