Felix Hoffmann in 1890 with the pharmaceutical state exam. In 1891 he graduated magna cum laude from the University of Munich. Two years later he earned his doctorate, also magna cum laude, after completing his thesis entitled "On certain derivatives of dihydroanthracene". In 1894, he joined Bayer as a research chemist. On 10 August 1897 Hoffmann synthesized acetylsalicylic acid (ASA) while working at Bayer under Arthur Eichengrün. By combining salicylic acid with acetic acid, he succeeded in creating ASA in a chemically pure and stable form. The pharmacologist responsible for verifying these results was skeptical at first, yet once several large-scale studies
A Is for Acid he went about murdering for profit." However, the reviewer was critical of the film's lack of tension and its failure to analyse Haigh's psyche. The opening scene depicting Haigh's childhood was filmed in Saltaire, West Yorkshire. Later where John is shown courting Betty, the Hyde Park Picture House in Hyde Park, Leeds. The police station to which John takes Constance Lane to report her friend missing, was filmed at Wetherby Council Offices. A Is for Acid A Is for Acid is a 2002 British television film based on the life of the serial killer John George Haigh, known as the