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1-Ethyl-1H-pyrazol-4-amine876343-24-7100 % similar 1-Ethyl-1H-pyrazole-4-carboxaldehyde304903-10-450 % similar 1-Methyl-1H-pyrazol-4-ylamine69843-13-648 % similar 1-Ethylpyrazole-4-boronic acid pinacol ester847818-70-642 % similar 1-Ethylpyrazole2817-71-235 % similar 5-Amino-1-ethylpyrazole3528-58-335 % similar