English: Pongratz, Alfred; Zirm, L. (1957). " Über neue pharmakologisch wirksame Amide und Ester der Nicotinsäure". Monatshefte für Chemie. 88 (3): 330–335. doi:10.1007/BF00901766.
Zorn B, Schmidt F. [N-acyl derivative of 1-phenyl-2,3-dimethyl-4-aminopyrazolon-5 (4-aminoantipyrine)]. Pharmazie. 1957;12(7):396-401. PMID: 13484416.
Klosa, Josef (1966). "Über eine Synthese von Carbonsäureamiden, aus Carbonsäuren und Aminen mit Hilfe von Polyphosphorsäure". Journal für Praktische Chemie. 31 (1-2): 41–48. doi:10.1002/prac.19660310106.
Katsnel'son, M.G. et al, CA, 1967,66,75952 (synth)
The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.
http://creativecommons.org/publicdomain/zero/1.0/deed.enCC0Creative Commons Zero, Public Domain Dedicationfalsefalse