🔹 What is Soy Phosphatidylcholine Powder (Injectable-grade)? Soy phosphatidylcholine (PC) powder, injectable-grade is a high-purity phospholipid derived from soybeans, formulated for parenteral administration. Phosphatidylcholine is a major component of cell membranes and is widely used in liposome preparation, drug delivery systems, and regenerative medicine due to its biocompatibility,...