Chlorpropham or CIPC is a plant growth regulator and herbicide used as a sprout suppressant for grass weeds, alfalfa, lima and snap beans, blueberries, cane fruit, carrots, cranberries, ladino clover, garlic, seed grass, onions, spinach, sugar beets, tomatoes, safflower, soybeans, gladioli and woody nursery stock.

Chlorpropham is approved for use in the United States as a plant regulator and herbicide only on potatoes.

[1] The use of CIPC was banned in the EU and UK in 2019 after it was not reauthorised for use due to toxicity concerns, with sales prohibited from January 2020.

[3] Commercial names include Bud Nip, Taterpex, Preventol, Elbanil, Metoxon, Nexoval, Stickman Pistols, Preweed, Furloe, Stopgerme-S, Sprout Nip, Mirvale, Bygran, ChlorIPC, Spud-Nic, Spud-Nie, Chloro-IFK, Chloro-IPC, Keim-stop, Triherbicide CIPC, OORJA.

Long term exposure at high doses (≥ 1000 mg/kg/day) could cause reduction of body weight gain, decrease in hematocrit and hemoglobin, and increase in blood reticulocytes.