APIs can be derived from various sources, including natural substances, synthetic processes, and biotechnological methods. For example, aspirin, a widely used drug for pain relief and anti-inflammatory purposes, is a synthetic API that mimics compounds found in the bark of willow trees. Conversely, some APIs, such as penicillin, are derived from naturally occurring organisms like fungi.
2. Plasticizers Many types of plastics are rigid in their natural state. To enhance flexibility and workability, plasticizers are added. Phthalates are commonly used plasticizers that soften plastics like polyvinyl chloride (PVC) to produce a more flexible material suitable for applications such as pipes, toys, and flooring. However, due to health concerns regarding certain plasticizers, there is an increasing demand for safer alternatives, such as bio-based plasticizers.
Sodium thiocyanate is also used in mining and metallurgy, particularly in the extraction of precious metals like gold and silver. The compound forms complexes with metal ions, helping to solubilize and recover these valuable materials from ores. This process is essential for the efficient recovery of resources in mining operations.
Stability testing is a crucial component in the development and quality assurance of both active pharmaceutical ingredients (APIs) and finished pharmaceutical products (FPPs). It ensures that these substances maintain their intended quality, efficacy, and safety during their intended shelf life, providing valuable information to manufacturers and healthcare providers alike.