Proceedings | Boulder Peptide Symposium

September 15-18, 2025

LIVE, In Person at the St. Julien Hotel in Boulder, Colorado
The only conference focused solely on the pharmaceutical development of peptide therapeutics.

BPS 2023


Aggregation Analytics- a complex topic

Andreas Stadelmaier

Senior Group Leader R&D, Bachem

ABSTRACT

Aggregation is a complex and heterogenous process for peptides. The individual trigger for peptide aggregation is peptide specific and can be induced by standard manufacturing conditions. Therefore, it is important to evaluate and manage the manufacturing process to produce physically stable drug substances. In this talk the presenter will share Bachem’s analytical expertise on peptide aggregation and how to avoid it through optimized downstream process conditions.

BIO

Dr. Andreas Stadelmaier is an organic chemist with over 20 years of experience in the industry of therapeutic drug substances from numerous different roles and positions.
Andreas received his Ph.D. in Organic Chemistry under the supervision of Prof. Richard R. Schmidt at the university of Konstanz, Germany. In his dissertation he focused on the synthesis of carbohydrates such as oligosaccharides, glycerophospholipids and glycopeptides.
In 2003 Andreas started his professional career as head of R&D at ChemCon GmbH in Freiburg, Germany, a CMO specialized primarily on custom manufacturing of small organic molecule APIs. He then joined Bachem AG in Bubendorf, Switzerland in 2011, where he was initially responsible for large scale purification of peptides. Andreas later transferred to Bachem R&D as Sr. Group Leader for downstream process development, and since then works on a wide variety of projects. Dr. Stadelmaier specializes on the isolation of peptide APIs for large-scale manufacturing, such as precipitation, lyophilization or spray drying, and is also an expert on related topics such as aggregation.


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