Rimegepant sulfate api active pharmaceutical ingredient?

Short answer: the active pharmaceutical ingredient (API) is rimegepant. The “sulfate” part just denotes a salt form of the same drug (rimegepant sulfate) used to improve properties like solubility.

- If you need the API for regulatory/formulation purposes, regulators usually refer to the active moiety as rimegepant (the sulfate is the salt form).
- Suppliers may sell it as the salt (rimegepant sulfate) or as the non-salt form (rimegepant/free base). Specify which form you want when ordering.

If you want, I can look up typical CAS numbers, synonyms, or supplier terms for the sulfate vs. base forms.