5-Chloropyrazolo[1,5-a]pyrimidine-3-carbaldehyde ≥98% 1256162-94-3 C₇H₄ClN₃O 181.58 g./mol $251.27 View
5-Chloro-[1,2,4]triazolo[1,5-a]pyrimidine-2-sulfonyl chloride 95% 1250998-35-6 C₅H₂Cl₂N₄O₂S 253.07 g./mol $1,375.05 View