4-Epitetracycline-d6
4-Epitetracycline-d6 is deuterated labeled 4-Epitetracycline hydrochloride (HY-136443) 4-Epitetracycline hydrochloride is an epimer of Tetracycline (HY-A0107). Tetracycline can undergo epimerization insolution to 4-Epitetracycline hydrochloride, which shows a much lower antibiotic activity.