2,4,8-Trimethyl-5-oxo-6-oxa-3,9-dithia-2,4,7-triazadec-7-enoic acid methyl ester 6-Oxa-3,9-dithia-2,4,7-triazadec-7-enoic acid, 2,4,8-trimethyl-5-oxo-, methyl ester 64055-10-3 BRN 2139031