top of page

Ralph Lessor, PhD

Organic / Medicinal Chemistry – University of Illinois

Medicinal Chemistry, Small Molecule Synthesis and Manufacturing


Synthetic organic chemistry, medicinal chemistry; API manufacture including process scaleup, optimization and troubleshooting, and commercial implementation; halogenated ether inhalation anesthetic manufacture, purification, packaging and delivery, including related medical devices; small molecule preclinical and early clinical development and CMC; manufacturing anomaly root cause investigation; peptide synthesis and purification.


 Baxter Principal Scientist and Head of Baxter Anesthesia Science R&D; Baxter technical lead for human recombinant hyaluronidase development partnership with Halozyme Therapeutics; leadership and program management of multiple NCE development programs for GI and Oncology drugs; experience in patent litigation activities; global regulatory affairs.


Member, American Chemical Society; volunteer expert on USP panel.

Ralph Lessor, PhD
bottom of page