Dr. Gerhard Schrader (25 Feb. 1903 - 1990) was a German chemist specializing in the discovery of new insecticides, hoping to make progress in the fight against hunger in the world. However, Dr. Schrader is best known for his accidental discovery of nerve agents such as sarin and tabun, and for this his is sometimes called the "father of the nerve agents". 1903 has the latest occurring solstices and equinoxes for 400 years, because the Gregorian calendar hasnt had a leap year for seven years or a century leap year since 1600. ... 1990 is a common year starting on Monday of the Gregorian calendar. ... This article needs to be cleaned up to conform to a higher standard of quality. ... Sarin or GB (O-Isopropyl methylphosphonofluoridate) is an extremely toxic substance that is one of the worlds most dangerous weapons of war. ... Tabun or GA (Ethyl N,N-dimethylphosphoramidocyanidate) is an extremely toxic substance that is one of the worlds most dangerous weapons of war. ...

Schrader grew up in Bortfeld, Germany and studied chemistry at Braunschweig University, and was later employed at the IG Farben Division Bayer AG. Map of Germany showing Braunschweig Braunschweig [ˈbraunʃvaik] is a city of 245,500 people (as of December 31, 2004), located in Lower Saxony, Germany. ... IG Farben (short for Interessen-Gemeinschaft Farbenindustrie AG) was a German conglomerate of companies formed in 1925 and even earlier during World War I. IG Farben held nearly a total monopoly on the chemical production, later during the time of Nazi Germany. ...

Dr. Schrader discovered several very effective insecticides, including bladan (the first fully synthetic contact insecticide), and parathion (E 605). In 1936, while employed at a company called IG Farben, he was experimenting with a class of compounds called organophosphates, which killed insects by interrupting their nervous systems. Instead of a new insecticide, however, he accidentally discovered tabun, an enormously toxic organophosphate compound still sometimes stockpiled today as a nerve agent. During World War II, under the Nazi regime, teams led by Dr. Schrader discovered three more organophosphate nerve agents, four in total: Parathion, or methyl parathion, is a very potent insecticide. ... 1936 was a leap year starting on Wednesday (link will take you to calendar). ... IG Farben (short for Interessen-Gemeinschaft Farbenindustrie AG) was a German conglomerate of companies formed in 1925 and even earlier during World War I. IG Farben held nearly a total monopoly on the chemical production, later during the time of Nazi Germany. ... An organophosphate (sometimes abbreviated OP) is the general name for any organic compound containing phosphorus. ... Tabun or GA (Ethyl N,N-dimethylphosphoramidocyanidate) is an extremely toxic substance that is one of the worlds most dangerous weapons of war. ... This article needs to be cleaned up to conform to a higher standard of quality. ... Mushroom cloud from the nuclear explosion over Nagasaki rising 18 km (over 11 miles) into the air, August 9, 1945. ... The Nazi party used a right-facing swastika as their symbol and the red and black colors were said to represent Blut und Boden (blood and soil). ...

• Tabun (1936)
• Sarin (1938)
• Soman (1944)
• Cyclosarin (1949)