2-Chloro-3-amino-4-methylpyridine is a key intermediate for the anti-AIDS drug Nevirapine. Nevirapine, with the chemical name 11-cyclopropyl-5,11-dihydro-4-methyl-6H-dipyrido[1,4]diazepin-6-one, is a non-nucleoside HIV reverse transcriptase inhibitor (NNRTIs) developed by the German company Boehringer Ingelheim in the early 1990s. It can be used alone or in combination with other drugs to treat adult HIV-infected individuals and AIDS patients. It effectively combats Human Immunodeficiency Virus-1 (HIV-1) primarily by inhibiting HIV replication and is one of the most widely used anti-AIDS drugs today, mainly applied to prevent mother-to-child viral transmission.