2,2-dibenzyloxy-5,5-dimethyl-Δ3-1,3,4-oxadiazoline

Hydrochinon-methylaether-O-carbonsaeureaethylester

(3R,5E,αR)-methyl 3-(N-[benzyloxycarbonyl]-N-[α-methylbenzyl]amino)hept-5-enoate

氨基甲酸苄酯

氨气