季戊四醇四（3,5-二- 叔 -丁基-4-羟基氢化肉桂酸酯）

Plastic additive 2 is a reference standard used to modify the physical properties of polymer-based materials in biologic formulations. By improving flexibility and stability, it ensures that packaging and delivery systems for biologic products remain durable over time. This additive is important for ensuring that biologics are securely stored and transported without compromising their integrity.

The United States Pharmacopeia (USP) provides quality standards for biologics to ensure their safety, efficacy, and quality throughout the manufacturing process. These standards assist manufacturers in adhering to regulatory requirements and help safeguard public health by reducing risks associated with biologics.