N-(7-NITRO-4-BENZOFURAZANYL)-L-PROLYL CHLORIDE;(S)-(-)-NBD-PRO-COCL;(S)-(-)-4-(2-CHLOROFORMYL-PYRROLIDINO)-7-NITROBENZOFURAZAN;(S)-(-)-4-NITRO-7-(2-CHLOROFORMYLPYRROLIDIN-1-YL)-2,1,3-BENZOXADIAZOLE;(S)-(-)-4-NITRO-7-(2-CHLOROFORMYLPYRROLIDIN-1-YL)BENZOFURAZAN;(S)-(-)-4-NITRO-7-(2-CHLOROFORMYLPYRROLIDIN-1-YL)BENZOFURAZANE;(S)-(-)-1-(7-NITRO-4-BENZOFURAZANYL)-2-PYRROLIDINECARBONYL CHLORIDE;(S)-(-)-NBD-Pro-COCl [=(S)-(-)-4-Nitro-7-(2-chloroformylpyrrolidin-1-yl)-2,1,3-benzoxadiazole] [HPLC Labeling Reagent for e.e. Determination]