FDA Warns Kellin Chemicals Over Refused API Facility Inspection
FDA issued a warning letter to Kellin Chemicals (Zhangjiagang) Co., Ltd., an establishment registered as an active pharmaceutical ingredient supplier to finished-drug manufacturers serving the U.S. market. The firm’s U.S. agent told FDA that the company refused a preannounced inspection planned for July 7–11, 2025. FDA states that drugs made, processed, packed, or held there are adulterated under section 501(j) because inspection was refused. FDA may withhold application or supplement approvals listing the facility and may detain or refuse relevant U.S. shipments. The company was asked to respond within 15 working days and could request an inspection.