Products Methyl 4-hydroxybenzoate (methylparaben) is present in many drugs as an excipient, especially in liquid and semisolid dosage forms. Structure and properties Methyl 4-hydroxybenzoate (C8H8O3, Mr = 152.1 g/mol) exists as a white crystalline powder that is very sparingly soluble in water (about 1.8 g per liter at 20°C). The melting point is about 125°C. … Methyl 4-Hydroxybenzoate
Products Propyl 4-hydroxybenzoate (propylparaben) is used as an excipient in many drugs, especially in liquid and semisolid dosage forms. Structure and properties Propyl 4-hydroxybenzoate (C10H12O3, Mr = 180.2 g/mol) exists as a white crystalline powder and is very slightly soluble in water. The melting point is about 99 °C. Propyl 4-hydroxybenzoate belongs to the paraben … Propyl 4-Hydroxybenzoate
Products Ethyl 4-hydroxybenzoate is mainly used as an excipient in liquid pharmaceuticals. Structure and properties Ethyl 4-hydroxybenzoate (C9H10O3, Mr = 166.2 g/mol) exists as a white crystalline powder or as colorless crystals and is very sparingly soluble in water. Ethyl 4-hydroxybenzoate belongs to the group of parabens. It is the ethyl ester of -hydroxybenzoic acid. … Ethyl 4-Hydroxybenzoate
