Synonyms: 2-Pyrrolidinecarbonylchloride, 1-[7-[(dimethylamino)sulfonyl]-4-benzofurazanyl]-, (R)-;2,1,3-Benzoxadiazole, 2-pyrrolidinecarbonyl chloride deriv.;2-Pyrrolidinecarbonyl chloride,1-[7-[(dimethylamino)sulfonyl]-2,1,3-benzoxadiazol-4-yl]-, (R)-; R(+)-DBD-ProCZ