This excerpt taken from the SYT 20-F filed Mar 16, 2005.
or AMBER® is a post-emergence herbicide for use in small grain cereals that also can be used in transplanted rice. It controls major annual broad-leaved weeds and some grasses. Triasulfuron is absorbed by leaves and roots. It is rapidly transported within the plant and acts by inhibiting biosynthesis of essential amino acids, hence stopping cell division and plant growth.