Active Pharmaceutical Ingredient Directory
4,348+ active pharmaceutical ingredients with verified FDA Drug Master File suppliers, CAS numbers, chemical identity and US patent-expiry dates — screened against live FDA enforcement data.
API patent cliff — upcoming US expiries
APIs whose latest listed US patent or exclusivity (FDA Orange Book) expires soonest — the moment generic sourcing opens up. Plan your sourcing pipeline ahead of the cliff.
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Monthly digest of APIs coming off US patent/exclusivity — so you can line up qualified suppliers before generics open up. No spam; unsubscribe anytime.
Most-supplied APIs
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