Richard Castledine is Head of Drug Substance Operations at Quotient Sciences. He has 15 years of experience in the pharmaceutical and contract development industries. After completing a PhD in synthetic organic chemistry at the University of Nottingham he worked briefly as a medicinal chemist, before moving into process chemistry. He has led process development of over 25 programs at different stages of development ranging from pre-clinical and Phase I to process validation. In his current role, Richard is responsible for the Analytical Development, Process Research and Development, Solid State Chemistry, and Drug Substance Production teams.