3,4-Dihidroksibenzaldehid i katehol mogu da deluju kao akceptori, mada je reakcija sporija.
Reference
^Ebel, J., Schaller-Hekeler, B., Knobloch, K.-H., Wellman, E., Grisebach, H. and Hahlbrock, K. (1974). „Coordinated changes in enzyme activities of phenylpropanoid metabolism during the growth of soybean cell suspension cultures”. Biochim. Biophys. Acta. 362: 417—424. PMID4472044.CS1 одржавање: Вишеструка имена: списак аутора (веза)
^Poulton, J.E. & Butt, V.S. (1975). „Purification and properties of S-adenosyl-L-methionine: caffeic acid O-methyltransferase from leaves of spinach beet (Beta vulgaris L)”. Biochim. Biophys. Acta. 403: 301—314. PMID241400.