2-(1-(2-hydroxyethyl)-2,6-dioxopiperidin-3-yl)isoindolin-1,3-dione (S)-2-(tert-butoxycarbonylamino)-3-methylbutanoate

N,N-二环己脲

N-t-butoxycarbonyl-L-valine anhydride

(2,2,2-trifluoroethyl)hydrazine hydrochloride

2-t-butoxy-4-isopropyloxazol-5(4H)-one