Sean Peng, Ph.D.
Founder and President

  • Dr. Sean Peng is an accomplished scientist with more than twenty years of pharmaceutical industry experience.  He has successfully built and managed bioanalysis and ADME/PK operations supporting drug discovery, preclinical evaluation, and clinical development in small and large pharmaceutical companies.
  • Dr. Peng has extensive expertise in bioanalysis, in vitro ADMET, in vivo PK/TK, formulation development, PK/PD simulation/modeling, and interspecies PK scaling. Prior to founding Touchstone Biosciences Company, he held technical and leadership positions of increasing responsibility at Procter & Gamble, Johnson & Johnson, and Galleon Pharmaceuticals.
  • Dr. Peng obtained his Ph.D. from the University of Illinois at Urbana-Champaign. He has published more than fifty peer-reviewed research articles, invited reviews and book chapters, and received an AAPS award for his work on hyphenated separation technologies.


  • Touchstone Biosciences Company, a contract research organization, was founded in 2015. We are located in Plymouth Meeting, Pennsylvania.

  • The mission of the company is to provide high-quality, low-cost, and fast-turnaround ADME/PK services with complimentary consultations on study design and data interpretation for pharmaceutical, biotech, and life sciences companies.
  • We actively work with small, medium, and large companies, as well as academic institutions, government agencies, and non-profit organizations.
  • Services are performed on a fee-for-service basis, a full-time equivalent agreement, or other prearranged terms.
  • We provide the highest quality of work, offer exceptional customer service, and go above and beyond to help our customers succeed.

Why Us

  • We are accomplished scientists from large & small pharmaceutical, biotech, and CRO companies.

  • We consistently provide high-quality work at a low cost.
  • We offer free consultations on study design, data interpretation, and structure optimization.
  • We have new customer, volume, and loyalty discount programs.
  • We go above and beyond to exceed our customers' expectations.  
  • We are located in the U.S. and will provide the best customer experience.

Career Opportunities

  • We are constantly looking for innovative, energetic, and talented professionals to join our exciting and fast-growing company.

  • If you are seeking scientific challenges and a satisfying career, please submit your resume to: careers@touchstonebiosciences.com.