Hoffman, A. published the artcileThe structure and synthesis of psilocybin, Name: Ethyl 7-methoxy-1H-indole-2-carboxylate, the publication is Experientia (1958), 397-9, database is CAplus.
Psilocybin, the psychotropic active principle from Psilocybe mexicana, was found to be the H3PO4 ester of 4-hydroxydimethyltryptamine (I). Hydrolysis of I gave 4-hydroxydimethyltryptamine which was synthesized from 4-benzyloxyindole by the oxalyl chloride method (Speeter, et al., C.A. 49, 15852f).
Experientia published new progress about 20538-12-9. 20538-12-9 belongs to indole-building-block, auxiliary class Indole,Ester,Ether, name is Ethyl 7-methoxy-1H-indole-2-carboxylate, and the molecular formula is C12H13NO3, Name: Ethyl 7-methoxy-1H-indole-2-carboxylate.
Referemce:
https://www.nature.com/articles/s41429-020-0333-2,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles