Piperazine and Impurities

4-chloro-6-(4-methyl-1-piperazinyl)-2-pyrimidinamine

3,4-dichloro-4'-(4-methylpiperazinomethyl) benzophenone

2-(4-Benzyl-piperazin-1-yl)-2-oxo-acetamidehydrochloride

3-(4-Methylpiperazin-1-yl)pyridin-4-amine

6-Piperazin-1-yl-nicotinic acid tert-butyl ester

4-(4-Methyl-piperazin-1-yl)-butylamine

4-chloro-3-fluoro-2'-(4-methylpiperazinomethyl) benzophenone

(3-(4-Methylpiperazin-1-yl)phenyl)methanol

3-(4-methylpiperazin-1-yl)propanoic acid dihydrochloride

1-[4-(2-Hydroxy-ethyl)-piperazin-1-yl]-ethanone

(S)-1-Boc-2-Benzylpiperizine

1-n-Heptylpiperazine

[4-(4-Amino-phenyl)-piperazin-1-yl]-(2-fluoro-phenyl)-methanone

tert-Butyl 4-((6-chloropyridazin-3-yl)sulfonyl)piperazine-1-carboxylate

2-Oxo-2-piperazin-1-yl-acetamide hydrochloride

(R)-1-Boc-2-Methylpiperazine hydrochloride

1,2-Bis(4-methylpiperazin-1-yl)ethanone (Nintedanib Impurity)

cyclohexyl 2-(4-methylpiperazinomethyl)phenyl ketone

1-(3-fluorobenzoyl)-3-methylpiperazine

4-N-Boc-2-oxo-piperazine-1-acetic acid