2-Methyl-3-furyl disulfide 28588-75-2 3,3'-Dithio-2,2'-dimethyldifuran 3,3'-Dithiobis(2-methylfuran) EINECS 249-095-2 FEMA No. 3259 Furan, 3,3'-dithiobis(2-methyl- bis(2-Methyl-3-furyl) disulfide