Dalapon-magnesium is the magnesium salt of dalapon, a selective herbicide. It is an organochloride, the conjugate base of 2,2-dichloropropanoic acid, and usually supplied as a water-soluble powder.
The compounds of every Wikipedia article carrying a Chembox or a Drugbox, refreshed daily, with the values their infoboxes give. The pages need JavaScript; the API does not.