Mostly about my backyard chickens. (Boring, I know), but there are a lot of us out here. Mine are only kept as pampered pets. I could eat a neighbor's chicken, but not MINE. There may be a comment on current events only if I get riled up enough. And there will always be a cartoon or a joke to cheer us. I promise to try my very best to respond to comments. Now I have to figure out how this blogger thingy works....
Thursday, October 1, 2015
Got a headache?
Ever think about how that wonderful aspirin is made?
By Mary Bellis Aspirin or
acetylsalicylic acid, is a derivative of salicylic acid that is a mild,
nonnarcotic analgesic useful in the relief of headache and muscle and
joint aches. The drug works by inhibiting the production of
prostaglandins, body chemicals that are necessary for blood clotting and
which also sensitize nerve endings to pain. The father of modern medicine was Hippocrates,
who lived sometime between 460 B.C and 377 B.C. Hippocrates was left
historical records of pain relief treatments, including the use of
powder made from the bark and leaves of the willow tree to help heal
headaches, pains and fevers. By 1829, scientists discovered that it was the compound called salicin in willow plants which gave you the pain relief. According to "From A
Miracle Drug" written by Sophie Jourdier for the Royal Society of
Chemistry: "It was not long before the active ingredient in willow bark
was isolated; in 1828, Johann Buchner, professor of pharmacy at
the University of Munich, isolated a tiny amount of bitter tasting
yellow, needle-like crystals, which he called salicin. Two Italians, Brugnatelli and Fontana, had in fact already obtained salicin in 1826, but in a highly impure form. By 1829, [French chemist] Henri Leroux had improved the extraction procedure to obtain about 30g from 1.5kg of bark. In 1838, Raffaele Piria
[an Italian chemist] then working at the Sorbonne in Paris, split
salicin into a sugar and an aromatic component (salicylaldehyde) and
converted the latter, by hydrolysis and oxidation, to an acid of
crystallised colourless needles, which he named salicylic acid." Henri Leroux had extracted salicin, in crystalline form for the first time, and Raffaele Piria succeeded in obtaining the salicylic acid in its pure state. The problem was that
salicylic acid was tough on stomachs and a means of 'buffering' the
compound was searched for. The first person to do so was a French
chemist named Charles Frederic Gerhardt. In 1853, Gerhardt
neutralized salicylic acid by buffering it with sodium (sodium
salicylate) and acetyl chloride, creating acetylsalicylic acid.
Gerhardt's product worked but he had no desire to market it and
abandoned his discovery. In 1899, a German chemist named Felix Hoffmann, who worked for a German company called Bayer,
rediscovered Gerhardt's formula. Felix Hoffmann made some of the
formula and gave it to his father who was suffering from the pain of
arthritis. With good results, Felix Hoffmann then convinced Bayer to
market the new wonder drug. Aspirin was patented on February 27, 1900. The folks at Bayer came
up with the name Aspirin, it comes from the 'A" in acetyl chloride, the
"spir" in spiraea ulmaria (the plant they derived the salicylic acid
from) and the 'in' was a then familiar name ending for medicines. Aspirin was first sold
as a powder. In 1915, the first Aspirin tablets were made.
Interestingly, Aspirin ® and Heroin ® were once trademarks belonging to
Bayer. After Germany lost World War I, Bayer was forced to give up both
trademarks as part of the Treaty of Versailles in 1919.
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