Monoethyl malonic acid belongs to the class of organic compounds known as dicarboxylic acids and derivatives. These are organic compounds containing exactly two carboxylic acid groups. Monoethyl malonic acid exists as a solid soluble (in water) and a weakly acidic compound (based on its pKa).

Acid orange 7?is a dye used to dye wool.

Granuliberin R is a new mast cell degranulating peptide comes from amphibian, can be isolated from the skin of frog Rana rugosa. Granuliberin R is a dodecapeptide, can act on rat peritoneal mast cell to liberate granules and release histamine.