[Metribuzin]
4-Amino-6-tert-butyl-3-methylthio-1,2,4-triazixin-5(4H)-one CAS[21087-64-9]
Trade name; metribuzin (I, B): Lexone, Sencor, Sencora, Sencoral, Sencorex
Chemical formula; C8H14N4OS
Purpose for use; herbicide
Toxicity; LD50 (oral): rat (male) 2200 mg/kg, (female) 2345 mg/kg
Test organisms;
Green algae (formerly including protozoa): Chlamydomonas reinharditii (ref. ID; 4553, 4565)