Methyl paraben (Standard) is the analytical standard of Methyl paraben. This product is intended for research and analytical applications. Methyl Paraben is a standardized methyl paraben allergen isolated from Yunnan hemlock (Tsuga dumosa). Methyl Paraben is commonly used as a stable, non-volatile preservative. Methyl Paraben increases histamine release and cellular regulation of immunity, blocks sodium channels, and prevents ischemia-reperfusion injury[1][2][3][4].