Butlerov (Moon)

Named after Aleksandr Mikhailovich Butlerov - Russian chemist (1828-1886).

Butlerov is a lunar impact crater on the far side , beyond the western limb and past the area sometimes brought into view through libration. It is located one crater diameter to the west of the crater Pease. Further to the west is the larger Kolhörster. This is a regular crater formation with a nearly circular rim that has a slight outward bulge along the southern edge. (wikipedia entry)

A crater is a circular depression likely created by an impact event. On the Moon they are named after deceased scientists, polar explorers, astronauts or cosmonauts.