1-Methylethyl 1,2,2-trichloroethyl disulfide 4095-32-3 BRN 2345803 Chemagro 4649 DISULFIDE, ISOPROPYL 1,2,2-TRICHLOROETHYL Disulfide, 1-methylethyl 1,2,2-trichloroethyl ENT 27,275