3,3-dimethoxy-2,7,10,13,16,19,22,25,28-nonaoxa-3-silanonacosane3,3-dimethoxy-2,7,10,13,16,19,22,25,28-nonaoxa-3-silanonacosaneV63022 · CAS 473258-60-590%¥315.00 / 5g 起选规格