- a crystalline, slightly water-soluble solid, C13H10N2O4, formerly used as a sedative: if taken during pregnancy, it may cause severe abnormalities in the limbs of the fetus.
- a synthetic drug formerly used as a sedative and hypnotic but withdrawn from the market when found to cause abnormalities in developing fetuses. Formula: C 13 H 10 N 2 O 4
- (as modifier)
