2,2-Dibutyl-6-oxo-1,3,2-oxathiastanninane-4-carboxylic acid 4H-1,3,2-Oxathiastannin-4-carboxylic acid, 2,2-dibutyldihydro-6-oxo- 67859-55-6 Dibutyltin(2-mercaptosuccinate) EINECS 267-402-8