(1-Methylethyl)phosphonothioic acid O-methyl O-(3-methyl-4-(methylsulfinyl)phenyl) ester 82980-44-7 BAY 52752 Bayer 52752 Phosphonothioic acid, (1-methylethyl)-, O-methyl O-(3-methyl-4-(methylsulfinyl)phenyl) ester