3926 Maleic hydrazide Maleic hydrazide (MH) was introduced into agriculture in the 1950s as a major commercial herbicide and a depressant of plant growth. It is a plant growth regulator (sprout inhibitor) and herbicide, that acts by inhibiting cell division in plants. It is used to control sprouting of potatoes and onions, suckers in tobacco, and growth of weeds, grasses and trees in/along lawns, turf, ornamental plants, non-bearing citrus, utility and highway rights-of-way, airports and industrial land. Most of the maleic hydrazide used in the U.S. is applied to tobacco (86-88%), followed by potatoes (10%), It is used to control sucker growth on tobacco plants, retardation of flowering and prolongation of dormancy period. 123-33-1 21954 C4H4N2O2 White powder. 3, not classifiable as to its carcinogenicity to humans. (L135) This is a man-made compound that is used as a pesticide. 2013-04-25T07:56:52Z 2026-03-27T00:20:01Z C18474 true O=C1NNC(=O)C=C1 C4H4N2O2 InChI=1S/C4H4N2O2/c7-3-1-2-4(8)6-5-3/h1-2H,(H,5,7)(H,6,8) BGRDGMRNKXEXQD-UHFFFAOYSA-N 112.0868 112.027277382 Exogenous Solid CHEMBL1489913 20632 CHEM002832 DTXSID9020792 NS00005908 58.2 26.651400000000002 9.339861876873647 0 2 2 10.380234053434721 -2.906612584731202 0 1 -1.44 -0.81 1.73e+01 g/l