<unk>  is a class Ia antiarrhythmic agent.  It is often used to bring out typical findings of ST elevations in patients suspected of having Brugada syndrome.
The compound was first isolated by Salimuzzaman Siddiqui in 1931  from the roots of Rauwolfia serpentina. He named it<unk> , after Hakim Ajmal Khan, one of the most illustrious practitioners of Unani system of medicine in South Asia.
Ajmaline
Allyl chloride
Metirosine
Vinyl ether
Methyl tert-butyl ether
Styramate
Ethacrynic acid 
Bromoform