Pyridine, 4,4'-(2,3-dihydrothieno[3,4-b]-1,4-dioxin-5,7-diyl)bis-

Pyridine, 4,4'-(2,3-dihydrothieno[3,4-b]-1,4-dioxin-5,7-diyl)bis- · CAS 1235864-74-0