(2S)-naringenin 4'-methyl ether + S-adenosyl-L-homocysteine + H(+) => (2S)-naringenin + S-adenosyl-L-methionine
(2s)-naringenin 4'-methyl ether + s-adenosyl-l-homocysteine + h(+) => (2s)-naringenin + s-adenosyl-l-methionine
(2S)-naringenin 4'-methyl ether + S-adenosyl-L-homocysteine + H(+) => (2S)-naringenin + S-adenosyl-L-methionine
(2s)-naringenin 4'-methyl ether + s-adenosyl-l-homocysteine + h(+) => (2s)-naringenin + s-adenosyl-l-methionine