Pyrrolidin-1-yl(1H-1,2,3-triazol-1-yl)methanone1312782-34-5100 % similar 1-Pyrrolidinecarbonyl chloride1192-63-831 % similar N-Acetylpyrrolidine4030-18-631 % similar 2-Chloro-1-(1-pyrrolidinyl)ethanone20266-00-630 % similar 1-Acetylpiperidine618-42-830 % similar