Peptide APIs

With more than 50 years of peptide experience, we have built a strong reputation by producing cGMP peptides with batch to batch reproducibility combined with high yields and high purity profiles. We have extensive know-how and experience in both solution and solid-phase synthesis. In addition we have a green method for the large-scale manufacturing of peptides in solution, called Green Continuous Liquid Phase Peptide Synthesis (GC-LPPS). This method enables a highly efficient synthesis, that is easy to scale up and yield products of reproducible high purity.

Our peptide capabilities:

  • For the synthesis manufacturing we have stainless steel and glass-lined reactors ranging from 100 to 1500 liters
  • Liquid (solution) Phase Peptide Synthesis (LPPS)
  • Solid Phase Peptide Synthesis (SPPS)
  • Green Continuous Liquid Phase Peptide Synthesis (GC-LPPS)
  • For purification we use ion exchange chromatography and reverse-phase preparative HPLC columns up to 45 cm in diameter
  • Final isolation is achieved using tray lyophilizers with a capacity up to 100 liters

For more information about GC-LPPS and our peptide development capabilities, please click here

Peptide products produced by Aspen Oss include the following:

** other can include Canada, Russia, India, China, etc.


Please contact us for further information about these products or our regulatory services.


Our APIs are used in among others the following therapeutic areas:

  • Women’s health
  • Male health
  • Drug and alcohol dependency
  • Muscle relaxation
  • Oncology
  • Central nervous system
  • Anticoagulant
  • Veterinary applications