Arginine. Arginine, or L-arginine as it is called with its L-structure, is a semi-essential amino acid. Arginine is involved in many metabolic processes and important in the treatment of heart diseases and high blood pressure.
Layman's explanation: Nitric acid was first discovered in 1648 by a German chemist, Johann Rudolf. However, in 1901 Wilhelm Ostwald developed the Ostwald Process, which became the principle way of producing nitric acid.
The alkali metal was discovered by Sir Humphry Davy in 1807 in England. The discovery of the element happened when he used electrolysis to process caustic potash. According to records, it is the first alkali metal to be discovered using electrolysis. At first, there are no distinctions between potassium and sodium.