Pfanstiehl is a specialist in the manufacture of high-purity, endotoxin-free, metal-free injectable cGMP excipients and biopharmaceutical components for various applications in bioprocessing, formulation, and specialty research. The company also offers custom API manufacturing, custom ADC linker synthesis, and other services. The core activity of the company is the development and manufacture of high-quality excipients for the biopharma and pharmaceutical industries, particularly for the production of vaccines and medicines.