2-Hydroxy-5-nitrosobenzoic Acid Methyl Ester

2-Hydroxy-5-nitrosobenzoic Acid Methyl Ester, also known as Methyl 2-hydroxy-5-nitrosobenzoate or MeONB, is an organic compound with the chemical formula C8H7NO4. MeONB is a yellow crystalline powder that is soluble in organic solvents such as methanol, ethanol, and acetone, but insoluble in water. MeONB is commonly used in the pharmaceutical industry as a reagent and intermediate for the synthesis of various drugs and organic compounds. It is also used in the preparation of dyes, pigments, and other organic materials. MeONB has been shown to exhibit antibacterial, antifungal, and anticancer properties. The chemical structure of MeONB contains a nitroso group (-NO) and a carboxyl group (-COOH) attached to a benzene ring. The nitroso group is responsible for its unique chemical properties, including its ability to act as a nitric oxide donor. Nitric oxide is a potent signaling molecule that is involved in various physiological processes such as vasodilation, neurotransmission, and immune response. MeONB is a relatively stable compound, but it can undergo decomposition under certain conditions such as exposure to heat or light. It is important to handle MeONB with care and store it in a cool, dry place away from sources of heat or light.