Following a communication from a chemist at Merck / MSD I can now tell you about 2 more cocrystal APIs on the market – Lexapro (escitalopram oxalate) and Steglatro (ertugliflozin pyroglutamic acid cocrystal. Lexapro is actually a cocrystal of the salt escitalopram oxalate with oxalic acid, similar in some ways to the Praziquantel intermediate naproxen salt used for resolution.
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