1-[(5-Methoxyindol-2-yl)carbonyl]-4-[3-(ethylamino)-2-pyridyl]piperazine 136816-75-6 (FREE BASE) 138540-32-6 (MESYLATE SALT) AIDS-003076 AIDS003076 Atevirdine BHAP Piperazine, 1-[3-(ethylamino)-2-pyridinyl]-4-[(5-methoxy-1H-indol-2-yl)carbonyl]- U-87201E