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6-Aminocaproic acid 3-Aminopyrazole Tris(hydroxymethyl)aminomethane 4-Aminobenzoic acid Glycine 1-METHYL-5-NITRO-1H-PYRAZOLE-4-CARBOXYLIC ACID Ethyl 3-amino-4-pyrazolecarboxylate tert-butyl 3-aminopyrazole-l- carboxylate 5-AMINO-4-CARBETHOXY-1-PHENYLPYRAZOLE ETHYL 5-AMINO-1-METHYLPYRAZOLE-4-CARBOXYLATE