Cl[CH2:2][C:3]1[C:7]([CH3:8])=[CH:6][N:5]([CH3:9])[N:4]=1.[CH2:10]([NH2:12])[CH3:11]>C1COCC1>[CH3:9][N:5]1[CH:6]=[C:7]([CH3:8])[C:3]([CH2:2][NH:12][CH2:10][CH3:11])=[N:4]1prepared by reaction of 3-chloromethyl-1,4-dimethyl-1H-pyrazole (Calderwood E. F. et al Synth. Commun. 2004, 34, 19, 3455-3464) with 2M ethylamine in THF.
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