可提取物和浸出物分析

Synthetic rubber has replaced natural rubber in many fields over the past decades. Very notable are the synthetic halobutyl rubbers used as a base for pharmaceutical elastomer components. They are an excellent choice due to their attributes of low permeability to air and moisture, excellent aging resistance, and low level of extractables. Halobutyl rubbers are available in two types, chlorobutyl and bromobutyl; both can be manufactured by co-polymerization with halogenated monomer.

Barriers are very important for drug packaging systems. There are two roles demanded of a barrier. The first is to protect drug products from the environment. This is the primary function of a drug container closure system. The second is to prevent drug products from interacting with the packaging materials themselves. Elastomer closure manufacturers have been working to improve these barriers through multiple technologies. The technologies used on commercial products are traditional coating, and film lamination. Each has pros and cons.

The pharmaceutical industry’s focus on extractables and leachables from packaging/delivery systems began during the mid-1990’s. Today’s regulatory agencies are more educated about the process, and drug product formulations have become more complex, which makes the need for robust extractables and leachables programs more critical than ever. In fact, failure to properly evaluate extractables and leachables has had a negative impact on many pharmaceutical companies, e.g., late-stage stability failures, submission delays, and recalls. To avoid this, the first question to ask is – “where do I start?”