John Jacob Abel to successfully isolate the neutral base of epinephrine by adding ammonium to highly concentrated extract, a method Abel himself tried but failed due to the use of low concentration of extract. After Takamine's success, Abel himself remarked, with great candor, "The efforts of years on my part in this once mysterious field of suprarenal, medullary biochemistry, marred by blunders as they were, eventuated, then, in the isolation of the hormone not in the form of the free base but in that of its monobenzoyl derivative." Together with L.G. Rowntree and B.B. Turner, Abel devised what they called a "vividiffusion" apparatus,
Abel Seyler the Younger His father was also a prominent figure in German freemasonry in the 18th century. In his first marriage, he had two daughters. After the death of his first wife, he married Caroline (Augusta Louise) Klügel, a daughter of the mathematician and physicist Georg Simon Klügel, and they had one son, the priest Georg Seyler. The principal founder of biochemistry and molecular biology, Felix Hoppe-Seyler, was an adopted son of his son. Abel Seyler the Younger Abel Jacob Gerhard Seyler (1756 – 1805), also known as Abel Seyler the Younger, was a German scholar, pharmacist, freemason and a member of the