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2. 2,4-Dichlorophenoxyacetic acid - Wikipedia

   en.wikipedia.org/wiki/2,4-Dichlorophenoxyacetic_acid

   2,4-Dichlorophenoxyacetic acid is an organic compound with the chemical formula Cl 2 C 6 H 3 OCH 2 CO 2 H.It is usually referred to by its ISO common name 2,4-D. [4] It is a systemic herbicide that kills most broadleaf weeds by causing uncontrolled growth, but most grasses such as cereals, lawn turf, and grassland are relatively unaffected.

3. 2,4-Dichloroamphetamine - Wikipedia

   en.wikipedia.org/wiki/2,4-Dichloroamphetamine

   2,4-Dichloroamphetamine (2,4-DCA) is a psychostimulant of the amphetamine family and a potent serotonergic neurotoxin related to para-chloroamphetamine (PCA; 4-chloroamphetamine). [ 1 ] [ 2 ] It is also a potent monoamine oxidase inhibitor .

4. Zincke reaction - Wikipedia

   en.wikipedia.org/wiki/Zincke_reaction

   Upon heating a primary amine with the N-2,4-dinitrophenyl-pyridinium salt (2), the addition of the amine leads to the opening of the pyridinium ring. A second addition of amine leads to the displacement of 2,4-dinitroaniline (5) and formation of the König salt [5] (6a and 6b).

5. Amine - Wikipedia

   en.wikipedia.org/wiki/Amine

   Amine. In chemistry, amines (/ ə ˈ m iː n, ˈ æ m iː n /, [1] [2] UK also / ˈ eɪ m iː n / [3]) are compounds and functional groups that contain a basic nitrogen atom with a lone pair.Formally, amines are derivatives of ammonia (NH 3), wherein one or more hydrogen atoms have been replaced by a substituent such as an alkyl or aryl group [4] (these may respectively be called alkylamines ...

6. 2,4-DB - Wikipedia

   en.wikipedia.org/wiki/2,4-DB

   2,4-DB or 4-(2,4-dichlorophenoxy)butyric acid is a selective systemic phenoxy herbicide used to control many annual and perennial broad-leaf weeds in alfalfa, peanuts, soybeans, and other crops. Its active metabolite , 2,4-D , inhibits growth at the tips of stems and roots.

7. Dichlorprop - Wikipedia

   en.wikipedia.org/wiki/Dichlorprop

   Today, only R-dichlorprop (also called dichlorprop-p or 2,4-DP-p) and its derivatives are sold as pesticides in the United States. Dichlorprop is a carboxylic acid, and like related herbicides with free acid groups, it is often sold as a salt or ester. Currently, the 2-ethylhexyl ester is used commercially. The butoxyethyl and isooctyl esters ...