Tetracaine Hydrochloride (Standard) is the standard substance of Tetracaine Hydrochloride, and it is applicable for quantitative analysis, quality control, and related research in biochemical experiments. Tetracaine hydrochloride (Amethocalne HCl) (Pontocaine), a potent local anaesthetic, is a channel function allosteric inhibitor. It is primarily used as an antipruritic and topically in ophthalmology, and it has been used for surface and spinal anesthesia.