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 underdeveloped, at that time there were no specific criteria of distinguishing literature from folklore. The question of authorship arose every time a new story was released, and is still discussed nowadays. Before the stories were released as a single volume on 28 January 1939, the issue became urgent. The publisher was concerned with the title of the book and the author's name. It was suggested to release the book as "The Tales from Grandpa Slyshko" (), as if Vasily Hmelinin was the author. It was eventually published as "The Malachite Box". Bazhov was not certain of the authorship himself. He