quercetin + S-adenosyl-L-methionine => isorhamnetin + S-adenosyl-L-homocysteine + H(+)
quercetin + s-adenosyl-l-methionine => isorhamnetin + s-adenosyl-l-homocysteine + h(+)
quercetin + S-adenosyl-L-methionine => isorhamnetin + S-adenosyl-L-homocysteine + H(+)
quercetin + s-adenosyl-l-methionine => isorhamnetin + s-adenosyl-l-homocysteine + h(+)