. ▁ ▁In ▁ 1 6 2 5 , ▁Tr ị n h ▁Ki ề u ▁( son ▁of ▁Tr ị n h ▁Tr á ng ) ▁attacked ▁C ao ▁B <0xE1> <0xBA> <0xB1> ng ▁and ▁captured ▁him . ▁He ▁was ▁executed ▁in ▁Th ang ▁Long . ▁ ▁References ▁ ▁Category : 1 6 2 5 ▁death s ▁Category : M ạ c ▁dynast y ▁em per ors ▁Category : Year ▁of ▁birth ▁unknown <0x0A> </s> ▁De xt rom eth ad one ▁( development al ▁code ▁name ▁RE L - 1 0 1 7 ) ▁is ▁the ▁( S )- en anti omer ▁of ▁m eth ad one . ▁It ▁acts ▁as ▁an ▁N - m eth yl - D - as part ate ▁re ceptor ▁( N MD AR ) ▁ant agon ist . ▁The ▁comp ound ▁also ▁has ▁aff inity ▁for ▁op io id ▁re cept ors . ▁As ▁of ▁October ▁ 2 0 1 9 , ▁de xt rom eth ad one ▁is ▁under ▁development ▁for ▁the ▁treatment ▁of ▁major ▁de press ive ▁dis order . ▁ ▁There ▁is ▁now ▁an ▁asym metric ▁synth esis ▁available ▁to ▁prepare ▁both ▁de xt rom eth ad one ▁( S -( + )- m eth ad one ) ▁and ▁lev om eth ad one ▁( R -( − )- m eth ad one ). ▁ ▁References ▁ ▁Category : Ex perimental ▁dru gs ▁Category : N MD A ▁re ceptor ▁ant agon ists ▁Category : Op io ids <0x0A> </s> ▁The ▁ 2