The Porphyrin Handbook - Google Books

https://books.google.de/books?id=IEOUt_0S_2YC&pg=PA15&dq=4,5-Dibromocatechol#v=onepage&q=4,5-Dibromocatechol&f=false

Announcing the sequel to the first ten volumes of The Porphyrin Handbook, which provided an authoritative treatise on the porphryin system and dealt in fine detail with the synthesis, chemistry, spectroscopy, and applications of porphyrins.The ten latest…