sinapine

/S IH0 N EY1 P IY0 N/
noun
  1. 1

    (organic chemistry) An alkaloidal amine found in seeds of black mustard (Brassica nigra, syns. Rhamphospermum nigrum, Sinapis erysimoides, Sinapis tetraedra, etc.), considered a choline ester of sinapic acid.