https://www.thevespiary.org/rhodium/Rhodium/pdf/dmt.4-chlorobutanal.pdf (https://www.thevespiary.org/rhodium/Rhodium/pdf/dmt.4-chlorobutanal.pdf)
Post 388588 (https://www.thevespiary.org/talk/index.php?topic=12746.msg38858800#msg38858800)
(Rhodium: "DMT synthesis using 4-chlorobutanal", Tryptamine Chemistry)