title: S-Methyl isomer content of stored malathion and fenitrothion water-dispersible powders and its relationship to toxicity.
mesh_terms: D000818:Animals; D004355:Drug Stability; D005278:Fenitrothion / Q000633:toxicity*; D007536:Isomerism; D008294:Malathion / Q000633:toxicity*; D008297:Male; D011208:Powders; D051381:Rats; D012995:Solubility; D013329:Structure-Activity Relationship; D014867:Water
chemical_list: D011208:Powders; D014867:Water; D008294:Malathion; D005278:Fenitrothion