Evonik introduces cQrex KC, a highly pure and soluble peptide designed to help optimize cystine supply and boost cell culture productivity in biopharmaceutical industry

Sample article from our Chemicals Industry

May 31, 2023 (press release) –

  • Unique performance booster for intensified bioprocesses
  • One thousand times more soluble than L-cystine at neutral pH
  • Latest addition to cQrex® portfolio of non-animal derived, highly pure dipeptides

Evonik now offers cQrex® KC, a performance-boosting peptide for cell culture media used in the manufacture of biological drugs. The new peptide enables cell culture process developers and media formulators in the biopharmaceutical industry to optimize cystine supply and increase cell culture productivity. cQrex® KC is the latest addition to Evonik’s toolbox of cQrex® cell culture ingredients designed to increase efficiency and productivity in cell culture processes used to produce monoclonal antibodies, vaccines, viral vectors and cell therapies. The market for biological drugs – greater than €250 billion in 2022 - continues to grow, with several thousand products in the pipeline.

“We are excited about the opportunities cQrex® KC offers to our customers. By enabling increased flexibility in media formulation and bioprocess design, we are helping more efficient production of biopharmaceuticals,” said Martin Schilling, director of Cell Culture Ingredients at Evonik’s Health Care business.

Adding cQrex® KC to Evonik’s market-leading cQrex® portfolio and accompanying application services, strengthens the company’s offerings of System Solutions. Nutrition & Care, the life sciences division at Evonik that is home to the Evonik Health Care business, aims to increase its share of System Solutions from 20 percent today to more than 50 percent by 2030. System Solutions are defined as multicomponent systems tailored to a specific customer need.

L-cystine is a key amino acid in cell culture. Sufficient supply is critical to support cell growth and production of biopharmaceuticals. However, L-cystine is hardly soluble in cell culture media at neutral pH, so it is difficult to supply enough of this amino acid to cells cultured in modern industrial processes that rely on chemically defined media.

cQrex® KC is a highly pure and soluble peptide designed to address the challenge of L-cystine supply in cell culture. It allows the formulation of concentrated and pH-neutral feed and perfusion media, as well as basal media, therefore intensifying and simplifying complex production processes. By increasing the cell proliferation, viability and cell-specific productivity, cQrex® KC also contributes to higher antibody titers and increased overall productivity of biological drugs.

Evonik Health Care is a leader in cellular nutrition and a global development and manufacturing partner to the world’s leading pharma and biopharma companies. By leveraging six decades of industry leadership, Evonik Health Care provides the market with robust pharmaceutical-grade cell culture ingredients and solutions including amino acids, cQrex® peptides, lipids, and other performance boosters. 


Further Information


Company information

Evonik is one of the world leaders in specialty chemicals. The company is active in more than 100 countries around the world and generated sales of €18.5 billion and an operating profit (adjusted EBITDA) of €2.49 billion in 2022. Evonik goes far beyond chemistry to create innovative, profitable, and sustainable solutions for customers. About 34,000 employees work together for a common purpose: We want to improve life today and tomorrow.

About Nutrition & Care

The focus of the business of the Nutrition & Care division is on health and quality of life. It develops differentiated solutions for active pharmaceutical ingredients, medical devices, nutrition for humans and animals, personal care, cosmetics, and household cleaning. In these resilient end markets, the division generated sales of €4.24 billion in 2022 with about 5,700 employees. 


In so far as forecasts or expectations are expressed in this press release or where our statements concern the future, these forecasts, expectations or statements may involve known or unknown risks and uncertainties. Actual results or developments may vary, depending on changes in the operating environment. Neither Evonik Industries AG nor its group companies assume an obligation to update the forecasts, expectations or statements contained in this release.


* All content is copyrighted by Industry Intelligence, or the original respective author or source. You may not recirculate, redistrubte or publish the analysis and presentation included in the service without Industry Intelligence's prior written consent. Please review our terms of use.

See our dashboard in action - schedule an demo
Jason Irving
Jason Irving
- SVP Enterprise Solutions -

We offer built-to-order chemicals industry coverage for our clients. Contact us for a free consultation.

About Us

We deliver market news & information relevant to your business.

We monitor all your market drivers.

We aggregate, curate, filter and map your specific needs.

We deliver the right information to the right person at the right time.

Our Contacts

1990 S Bundy Dr. Suite #380,
Los Angeles, CA 90025

+1 (310) 553 0008

About Cookies On This Site

We collect data, including through use of cookies and similar technology ("cookies") that enchance the online experience. By clicking "I agree", you agree to our cookies, agree to bound by our Terms of Use, and acknowledge our Privacy Policy. For more information on our data practices and how to exercise your privacy rights, please see our Privacy Policy.