5-Chloro-2-hydroxynicotinonitrile5-Chloro-2-hydroxynicotinonitrileY19308 · CAS 1048913-62-797%¥140.00 / 1g 起选规格
Chroman-8-sulfonyl chloride , 97%Chroman-8-sulfonyl chloride , 97%Y19314 · CAS 1048970-15-5≥95%¥1130.00 / 25mg 起选规格