Aspergillic acid acetic acid gives a diketopiperazine. Hydrolysis with HBr yields a mixture of -leucine and -isoleucine. These reaction schemes can be seen below: Aspergillic acid Aspergillic acid is an organic chemical compound with the molecular formula CHNO. It has a pale yellow crystalline appearance. Aspergillic acid is most commonly known as an antibiotic and antifungal agent that is derived from certain strains of the fungus "Aspergillus flavus". In 1940 Edwin C. White and Justina H. Hill discovered that a fungal strain of "Aspergillus flavus" growing in a surface culture on a tryptone-salt was capable of producing a bactericidal filtrate. It has
Nonanoic acid Nonanoic acid Nonanoic acid, also called pelargonic acid, is an organic compound with structural formula CH(CH)COH. It is a nine-carbon fatty acid. Nonanoic acid is a colorless oily liquid with an unpleasant, rancid odor. It is nearly insoluble in water, but very soluble in organic solvents. The esters and salts of nonanoic acid are called nonanoates. Its refractive index is 1.4322. Its critical point is at 712 K (439 °C) and 2.35 MPa. Nonanoic acid occurs naturally as esters in the oil of pelargonium. Together with azelaic acid, it is produced industrially by ozonolysis of oleic acid. Synthetic esters of