Tetracaine (hydrochloride) (Standard) is the analytical standard of Tetracaine (hydrochloride). This product is intended for research and analytical applications. Tetracaine hydrochloride (Amethocaine hydrochloride) is a calcium channel protein inhibitor and blocks voltage-sensitive release of Ca2+ from sarcoplasmic reticulum. Tetracaine hydrochloride is mainly used topically in ophthalmology and as an antipruritic[1][2].