106647-94-3
(R)-ethyl 1-((S)-1,2-dihydroxyethyl)-6,7-dihydroxy-3,4-dihydroisoquinoline-2(1H)-carboxylate
→
106647-99-8
(+)-threo-N-(ethoxycarbonyl)hydroxynorlaudanosine
2688-77-9
(S)-Laudanosine