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 and trauma, which Bazhov endured between January 1937 and 1938, and noted that "The Malachite Box" "is filled with unprecedented for Soviet (and especially children's) literature horror". At that time Bazhov was fired from Sverdlovsk Publishing House, where he had worked since 1931, and expelled from the Communist Party for "glorification of people's enemies" in his recent book. His past as a member of the Socialist Revolutionary Party and a seminary teacher was also questionable. He was once summoned for interrogation by NKVD, but luckily his investigator was arrested the day before the meeting. The author was reinstated in the