overall yield造句
31. From 1-phenyl-2-propylamine, selegiline hydrochloride, an anti-Parksins drug, was synthesized via N-methylation, enantiomer separation, N-alkylation and salt formation with an overall yield of 42.2%.
32. The overall yield of sodium copper chlorophyllin is 41.3 %.
33. Clarithromycin was prepared from erythromycin A through oximation, protection, methylation and deprotection. The overall yield of clarithromycin was 40%.
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