Pitofenone-d4 Hydrochloride is the deuterated form of Pitofenone Hydrochloride (P536500), which is Diclofenac and its combination with Pitofenone and Fenpiverinium shows anti-spasmodic activity.Also, it is derived from 2-Bromoethanol-d4 (B684737), which is a isotope labeled 2-Bromoethanol, widely used intermediate in organic synthesis.