Amraphel in Easton's Bible Dictionary

king of Shinar, southern Chaldea, one of the confederates of Chedorlaomer, king of Elam, in a war against Sodom and cities of the plain (Gen. 14:1, 4). It is now found that Amraphel (or Ammirapaltu) is the Khammu-rabi whose name appears on recently-discovered monuments. (See CHEDORLAOMER -T0000781). After defeating Arioch (q.v.) he united Babylonia under one rule, and made Babylon his capital.

Link: https://bible-history.com/eastons/A/Amraphel/