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3-Acetyl-1-chlorocarbonyl-2-imidazolidone41730-71-6100 % similar Tetraacetylethylenediamine10543-57-454 % similar 3-(Methylsulfonyl)-2-oxo-1-imidazolidinecarbonyl chloride41762-76-950 % similar 4-Ethyl-2,3-dioxopiperazinecarbonyl chloride59703-00-341 % similar 1,4-Diacetyl-2,5-piperazinedione3027-05-240 % similar 1-Acetyl-2-pyrrolidone932-17-239 % similar Acetylcaprolactam1888-91-137 % similar 1-Pyrrolidinecarbonyl chloride1192-63-835 % similar N-Acetylpyrrolidine4030-18-635 % similar 4-Methyl-1-piperazinecarbonyl chloride39539-66-735 % similar 2-Oxo-1-imidazolidinecarbonyl chloride13214-53-435 % similar 1-Acetyl-2-imidazolidinone5391-39-935 % similar 1,3,4,6-Tetraacetyltetrahydroimidazo(4,5-d)imidazole-2,5(1H,3H)-dione10543-60-934 % similar 1-Acetylpiperidine618-42-834 % similar Diethylcarbamoyl chloride88-10-834 % similar 1-Acetylpiperidine-4-carbonyl chloride59084-16-134 % similar N,N-Bis(2-chloroethyl)carbamic chloride2998-56-333 % similar Dimethylcarbamoyl chloride79-44-733 % similar 4-Methyl-1-piperazinecarbonyl chloride hydrochloride55112-42-032 % similar 1-Acetylpiperazine13889-98-032 % similar