4-amino-6-(tert-butyl)-3-(methylthio)-1,2,4-triazin-5(4H)-one-13CD3;3-Methylthio-4-amino-6-tert-butyl-1,2,4-triazin-5(4H)-one-13C-d3; 4-Amino-6-(1,1-dimethylethyl)-3-(methylthio)-1,2,4-triazin-5(4H)-one-13C-d3; 4-Amino-6-tert-butyl-3-(methylthio)-1,2,4-triazin-5-one-13C-d3; 4-Amino-6-tert-butyl-3-(methylthio)-4,5-dihydro-1,2,4-triazin-5-one-13C-d3; BAY 61597-13C-d3; BAY 6159H-13C-d3; BAY 94337-13C-d3; Bayer 6159-13C-d3; Lexone-13C-d3; Lexone DF-13C-d3; Metribuzin-13C-d3; Metribuzine-13C-d3; Sencor-13C-d3; Sencor 4F-13C-d3; Sencor 75DF-13C-d3; Sencorex-13C-d3; Sencorex L.F.-13C-d3; Senkor-13C-d3; Zontran-13C-d3;Metribuzin-13C-d3